Simply click the crayons to change the selected color! (You can tell what color is selected because it will be moving) Draw fun pictures! Change the pen size! Change the color so that you have full access to the color wheel! Change the pen transparency so that you can shade! (And sorry if the adjustments give you less room to color, I’m on mobile so it doesn’t really allow me to move the variables all the way to the corner, idk why.) The only way to erase the entire photo is indeed, by clicking the green flag. The eraser tool just erases. If the brightness is up, black won’t work.(50 or under)
Invert the colors.