The color you picked will be on the top right. There are 3 shapes/modes. 1 is square, 2 is right-angled triangle, and 3 is line. The "Size" variable is basically how thick you want it to be. HOW TO DRAW (just in case if you didn't know): First, press and hold at the area you want the shape's starting point to be (squares and triangles' starting point is at their top left part). Then, drag until you think it is okay. Then, release to put it on the screen. (You cannot edit it after releasing it). Press the "Delete All" button to erase all the shapes.