code check for me please

  //-------insert button press switch command here-----------
  
  matrix.clearScreen(); 
   // draw a frown!
  
    
  matrix.drawPixel(8, 2, 2);
  matrix.drawPixel(9, 2, 2);
  matrix.drawPixel(14, 2, 2);
  matrix.drawPixel(15, 2, 2);

  
  matrix.drawPixel(8, 3, 2);
  matrix.drawPixel(9, 3, 2);
  matrix.drawPixel(14, 3, 2);
  matrix.drawPixel(15, 3, 2);
  
   
  matrix.drawPixel(8, 4, 2);
  matrix.drawPixel(9, 4, 2);
  matrix.drawPixel(14, 4, 2);
  matrix.drawPixel(15, 4, 2);
  
  matrix.drawPixel(8, 5, 2);
  matrix.drawPixel(9, 5, 2);
  matrix.drawPixel(14, 5, 2);
  matrix.drawPixel(15, 5, 2);
  
    matrix.drawPixel(7, 9, 2);
  matrix.drawPixel(8, 9, 2);
  matrix.drawPixel(9, 9, 2);
  matrix.drawPixel(10, 9, 2);
  matrix.drawPixel(11, 9, 2);
  matrix.drawPixel(12, 9, 1);
  matrix.drawPixel(13, 9, 2);
  matrix.drawPixel(14, 9, 2);
  matrix.drawPixel(15, 9, 2);
  matrix.drawPixel(16, 9, 2);
   
 
  matrix.drawPixel(6, 10, 2);
  matrix.drawPixel(7, 10, 2);
  matrix.drawPixel(8, 10, 2);
  matrix.drawPixel(9, 10, 2);
  matrix.drawPixel(10, 10, 2);
  matrix.drawPixel(11, 10, 2);
  matrix.drawPixel(12, 10, 1);
  matrix.drawPixel(13, 10, 2);
  matrix.drawPixel(14, 10, 2);
  matrix.drawPixel(15, 10, 2);
  matrix.drawPixel(16, 10, 2);
  matrix.drawPixel(17, 10, 2);

  
  
  matrix.drawPixel(5, 11, 2);
  matrix.drawPixel(6, 11, 2);
  matrix.drawPixel(17, 11, 2);
  matrix.drawPixel(18, 11, 2);
  
 
  matrix.drawPixel(4, 12, 2);
  matrix.drawPixel(5, 12, 2);
  matrix.drawPixel(18, 12, 2);
  matrix.drawPixel(19, 12, 2);

  matrix.writeScreen();
  
   delay(3000);
   
     matrix.clearScreen(); 
     
      //-------insert button press switch command here-----------
  
  matrix.clearScreen(); 
   // draw danger!


  matrix.drawPixel(18, 0, 2);
  matrix.drawPixel(19, 0, 2);
  

  matrix.drawPixel(16, 1, 2);
  matrix.drawPixel(17, 1, 2);
  matrix.drawPixel(19, 1, 2);
  

  matrix.drawPixel(14, 2, 2);
  matrix.drawPixel(15, 2, 2);
  matrix.drawPixel(19, 2, 2);


  matrix.drawPixel(12, 3, 1);
  matrix.drawPixel(13, 3, 2);
  matrix.drawPixel(19, 3, 2);

  

  matrix.drawPixel(10, 4, 2);
  matrix.drawPixel(11, 4, 2);
  matrix.drawPixel(19, 4, 2);

 
  matrix.drawPixel(8, 5, 2);
  matrix.drawPixel(9, 5, 2);
  matrix.drawPixel(19, 5, 2);

  matrix.drawPixel(6, 6, 2);
  matrix.drawPixel(7, 6, 2);
  matrix.drawPixel(19, 6, 2);

 
  matrix.drawPixel(5, 7, 2);
  matrix.drawPixel(9, 7, 2);
  matrix.drawPixel(10, 7, 2);
  matrix.drawPixel(11, 7, 2);
  matrix.drawPixel(12, 7, 1);
  matrix.drawPixel(13, 7, 2);
  matrix.drawPixel(14, 7, 2);
  matrix.drawPixel(16, 7, 2);
  matrix.drawPixel(17, 7, 2);
  matrix.drawPixel(19, 7, 2);

  
   
  matrix.drawPixel(5, 8, 2);
  matrix.drawPixel(9, 8, 2);
  matrix.drawPixel(10, 8, 2);
  matrix.drawPixel(11, 8, 2);
  matrix.drawPixel(12, 8, 1);
  matrix.drawPixel(13, 8, 2);
  matrix.drawPixel(14, 8, 2);
  matrix.drawPixel(16, 8, 2);
  matrix.drawPixel(17, 8, 2);
  matrix.drawPixel(19, 8, 2);


  matrix.drawPixel(6, 9, 2);
  matrix.drawPixel(7, 9, 2);
  matrix.drawPixel(19, 9, 2);

  
  
  matrix.drawPixel(8, 10, 2);
  matrix.drawPixel(9, 10, 2);
  matrix.drawPixel(19, 10, 2);

  
 
  matrix.drawPixel(10, 11, 2);
  matrix.drawPixel(11, 11, 2);
  matrix.drawPixel(19, 11, 2);

  
  matrix.drawPixel(12, 12, 1);
  matrix.drawPixel(13, 12, 2);
  matrix.drawPixel(19, 12, 2);

  
  
  matrix.drawPixel(14, 13, 2);
  matrix.drawPixel(15, 13, 2);
  matrix.drawPixel(19, 13, 2);

  
  matrix.drawPixel(16, 14, 2);
  matrix.drawPixel(17, 14, 2);
  matrix.drawPixel(19, 14, 2);

  

  matrix.drawPixel(18, 15, 2);
  matrix.drawPixel(19, 15, 2);


  matrix.writeScreen();
  
   delay(3000);
   
     matrix.clearScreen(); 
     
           //-------insert button press switch command here-----------
  
  matrix.clearScreen(); 
   // draw ? 
  matrix.drawPixel(5, 1, 2);
  matrix.drawPixel(6, 1, 2);
  matrix.drawPixel(7, 1, 2);
  matrix.drawPixel(8, 1, 2);
 
  matrix.drawPixel(3, 2, 2);
  matrix.drawPixel(4, 2, 2);
  matrix.drawPixel(5, 2, 2);
  matrix.drawPixel(6, 2, 2);
  matrix.drawPixel(7, 2, 2);
  matrix.drawPixel(8, 2, 2);
  matrix.drawPixel(9, 2, 2);
  matrix.drawPixel(10, 2, 2);
 
  matrix.drawPixel(3, 3, 2);
  matrix.drawPixel(4, 3, 2);
  matrix.drawPixel(5, 3, 2);
  matrix.drawPixel(6, 3, 2);
  matrix.drawPixel(7, 3, 2);
  matrix.drawPixel(8, 3, 2);
  matrix.drawPixel(9, 3, 2);
  matrix.drawPixel(10, 3, 2);
 
  matrix.drawPixel(1, 4, 2);
  matrix.drawPixel(2, 4, 2);
  matrix.drawPixel(3, 4, 2);
  matrix.drawPixel(4, 4, 2);
  matrix.drawPixel(9, 4, 2);
  matrix.drawPixel(10, 4, 2);
  matrix.drawPixel(11, 4, 2);
  matrix.drawPixel(12, 4, 1);
   
  matrix.drawPixel(1, 5, 2);
  matrix.drawPixel(2, 5, 2);
  matrix.drawPixel(3, 5, 2);
  matrix.drawPixel(4, 5, 2);
  matrix.drawPixel(9, 5, 2);
  matrix.drawPixel(10, 5, 2);
  matrix.drawPixel(11, 5, 2);
  matrix.drawPixel(12, 5, 1);
  
  matrix.drawPixel(1, 6, 2);
  matrix.drawPixel(2, 6, 2);
  matrix.drawPixel(11, 6, 2);
  matrix.drawPixel(12, 6, 1);
  matrix.drawPixel(13, 6, 2);
  matrix.drawPixel(14, 6, 2);
  matrix.drawPixel(15, 6, 2);
  matrix.drawPixel(16, 6, 2);
  matrix.drawPixel(19, 6, 2);
  matrix.drawPixel(20, 6, 2);
  matrix.drawPixel(21, 6, 2);
  matrix.drawPixel(22, 6, 2);
 
  matrix.drawPixel(1, 7, 2);
  matrix.drawPixel(2, 7, 2);
  matrix.drawPixel(11, 7, 2);
  matrix.drawPixel(12, 7, 1);
  matrix.drawPixel(13, 7, 2);
  matrix.drawPixel(14, 7, 2);
  matrix.drawPixel(15, 7, 2);
  matrix.drawPixel(16, 7, 2);
  matrix.drawPixel(19, 7, 2);
  matrix.drawPixel(20, 7, 2);
  matrix.drawPixel(21, 7, 2);
  matrix.drawPixel(22, 7, 2);
  
  matrix.drawPixel(1, 8, 2);
  matrix.drawPixel(2, 8, 2);
  matrix.drawPixel(13, 8, 2);
  matrix.drawPixel(14, 8, 2);
  matrix.drawPixel(15, 8, 2);
  matrix.drawPixel(16, 8, 2);
  matrix.drawPixel(19, 8, 2);
  matrix.drawPixel(20, 8, 2);
  matrix.drawPixel(21, 8, 2);
  matrix.drawPixel(22, 8, 2);
   
  matrix.drawPixel(1, 9, 2);
  matrix.drawPixel(2, 9, 2);
  matrix.drawPixel(13, 9, 2);
  matrix.drawPixel(14, 9, 2);
  matrix.drawPixel(15, 9, 2);
  matrix.drawPixel(16, 9, 2);
  matrix.drawPixel(19, 9, 2);
  matrix.drawPixel(20, 9, 2);
  matrix.drawPixel(21, 9, 2);
  matrix.drawPixel(22, 9, 2);
  
  matrix.drawPixel(1, 10, 2);
  matrix.drawPixel(2, 10, 2);
  matrix.drawPixel(3, 10, 2);
  matrix.drawPixel(4, 10, 2);
  
  matrix.drawPixel(1, 11, 2);
  matrix.drawPixel(2, 11, 2);
  matrix.drawPixel(3, 11, 2);
  matrix.drawPixel(4, 11, 2);

  matrix.drawPixel(3, 12, 2);
  matrix.drawPixel(4, 12, 2);
  matrix.drawPixel(5, 12, 2);
  matrix.drawPixel(6, 12, 2);
  matrix.drawPixel(7, 12, 2);
  matrix.drawPixel(8, 12, 2);

  matrix.drawPixel(3, 13, 2);
  matrix.drawPixel(4, 13, 2);
  matrix.drawPixel(5, 13, 2);
  matrix.drawPixel(6, 13, 2);
  matrix.drawPixel(7, 13, 2);
  matrix.drawPixel(8, 13, 2);
  
  matrix.drawPixel(5, 14, 2);
  matrix.drawPixel(6, 14, 2);
  matrix.drawPixel(7, 14, 2);
  matrix.drawPixel(8, 14, 2);
  matrix.writeScreen();
  
   delay(3000);
   
     matrix.clearScreen(); 

  // whew!
}

thats all the code