How to print logo in thermal printer epson TM82

Hello, I want to know about how to print logo in epson TM82.
I use thermalprinter lib.
Thermalprinter Lib

And I have read about ESC/POS of TM82 but I do not understand how to use it.

How to use GS * for define downloaded bit image. GS* command
How to chang my logo to bit image.
How to use GS / for Print downloaded bit image. GS / command

I use arduino mega2560
Tell me please.