I do artwork for a living, steady hands come with the territory. Also, I don't try and do these in one sitting. I find it pays to just put them away if they're being annoying or you're not in the mood. These are, after all, something I do for fun. It's just been surprising to me that it's a thing other folks do too and is something that's been taking off on Youtube lately with resto and custom vids. When I first started doing these I didn't think anyone else would be that interested in it, so just sort of enjoyed it myself as a cheap little hobby to keep me occupied. It's been something of a revelation to see just what sort of things other folks have been doing along the same lines.