These are interesting but in my opinion (please take it with a pinch of salt, I am no expert) touch icons needn't have the 'hand' to indicate that they're touch. Hand feels redundant and heavy.

For example, the double-finger-double-tap a coalesced double-ring is good enough, there is no need of hand on the icon. Similarly for triple-tap three rings coalesced together is enough, drop the hand.

'Press and hold' could be done with the icon you've for 'hold timer' -- without the hand of course. For left, right, up and down swipes something else is required. Hand is terrible while arrows alone won't cut it. We also need icons to suggest typing(keyboard) mode or doodling(free hand) mode on touch screens.