Use keys 0-9 to switch parts. up arrow/down arrow to scale slowly. w/s to scale quickly. space to switch BG. Click to place. Left and right arrow to rotate objects. The sliders do exactly as they say. A to enter screenshot mode (hides UI and can only be done once because I'm lazy) X and Y to change the color effect if you don't want to play with the variables. G and H to change brightness without playing with the variables. V and U to change transparency without playing with the variables.g
you could theoretically make any image if you have too much time on your hands. RECOMMENDED TO USE A COMPUTER WITH A TOUCHSCREEN LIKE SOME CHROMEBOOK!