You click on the colors to pick the colors, change the thickness of the pen by changing the slider, press " New" to make a new background to draw with, click in the eraser and erase what you want, and that's it! (TRY PRESSING R FOR A LONG TIME ON A COLOR OTHER THAN BLACK)
Thanks to @painted-pupper for telling me how to switch the variable to slider mode. (TRY PRESSING R FOR A LONG TIME ON A COLOR OTHER THAN BLACK) And thx to Ceeex from youtube for the music.
