Just draw. Click on the color you want, then hold space or click while moving the mouse to draw. Up or down arrow keys to toggle transparency, left or right arrow keys to toggle pen size. When using eraser, don't be too quick with your mouse movements as the eraser cannot keep up with your mouse if you're moving the mouse too fast.
All code by me. There's a contest for this project, it's down below called the "Best Drawing Contest." studio. To enter the contest, remix this project, make sure to alter the code so your drawing doesn't get deleted, draw the picture, and when the time comes I will look at all of them. To make sure that the drawing isn't deleted, go into the first sprite, scroll down, and dis attach the erase all block after the when green flag pressed block. That means if you draw something it won't be erased when you press the flag. @FattyPatty77 your username gave inspiration.
