I see that you have connected LED to 3.3V.
The Uno has :
DC Current for 3.3V Pin 50 mA
The Uno's 3.3V regulator is a bit wimpy. It is safer to connect the LED to 5V via a 47R resistor.
And of course connect MISO to digital#12
Anyway, it is good that Atomic_Sheep has got the display working.
David.