this is a pixel art creater also known as mc paint
so what u have to do is select a color on the right
and then u see the black screen with buttons all over it?
press one of those buttons and the color u have selected
must have been teleported there
or painted there
if there are any bugs please tell me in the comments
there is also a send and clear button the light blue wool with buttons is send to
the other screen on the left with no buttons and the terracotta is clear the screen
with b uttons the thing on the far left with repeating command blocks and stuff
is a block identifyer put a block of ur choice on that gold block and paint with it!
it doesnt work with all blocks only some so i think thats all you need so

have fun

ik u didnt read that

u were too lazy

it was the tutorial