Use down to press down your PEN-guin when you want to draw. Use the up arrow to lift your PEN-guin up. Touch the colour you want to use - the most recently touched one will be your colour. Use the slider to change PEN-guin size, but beware - the eraser deletes ALL. Sorry for the horrible puns!
I know various people have made these - mine was inspired by a friend of mine - I decided to make roughly the same thing, but with a twist!