Gestures
Right hand: Pinch = Grow/Stamp, Open palm = Leaf paint, Fist = Erase
Left hand: Thumb up = Palette, V sign = Symmetry, Pinch + vertical = Brush size
Two-hand pinch = Camera orbit/zoom
Keys
1 Grow · 2 Leaf · 3 Erase · Z Undo · Y Redo · S Save · L Load · E Export