right click to draw. use arrow keys or ASWD to move the cursor, or press "e" to turn on mouse mode press "t" to turn off mouse mode. click "r" to erase all. also while your in mouse mode to draw you have to right click instead of left clicking. if you want to trace something click "f" to turn your camera on and "g" to turn it off. if you want to change the color press "q"
so this game isn't finished so be on the lookout for updates, it took awhile to make but its not done for example I need to add a dial for the size of the pen and a way to change colors. I'd like to add a thumb nail to the project. so those are the things I need to add, but I have school and my Minecraft server to take care of. so don't expect any updates soon