I advise other people similarly but rarely take my own advice ^_^; Like when I hurt my hand I struggled on (just changed the way I held the pen which worked out all rightish for 3d stuff but I couldn't colour very well due to not being able to change pressure easily).

The gigantic graphics card is currently doing the rendering. I did the haircut and you probably shouldn't trust me to do one of those in meatspace as I don't have an undo combo or curve guides out here XD

Looking at the old stuff was definitely good for me as I plateaud around 2012 (which I'm really glad about as it means I've been able to move forward, prior to that it was just a lot of repeat work because starting over was quicker and easier than fixing the old crap stuff, but can also be a bit of a downer because you don't notice improvements because they're now so miniscule).

Hope looking at old stuff gives you some motivation or new ideas, whichever it is you need :D