This is perfect, Im getting the new iTouch and you just made this support retina display! Some things that will really help with drawing is the choice to ZOOM IN/ OUT for a more detailed drawing experience. This goes the same with erasing. IT WOULD REALLY HELP!!! Also different brush sizes. Brushing faster/ slower makes it hard to draw sometimes. KEEP UPDATING :D
TheAndrewBen about LiveSketch, v1.7