Mark I really sympathise with your view, I am much the same I came back to model making when I retired, got myself an airbrush and struggled from then on. I go each year to Telford and part of me comes away thinking I might as well give up. I think you have to be true to yourself, is what you are building better than that which you built previously?. It also helps to join an IPMS club and I learn little bits from other members, for example I now use Glue ‘n’ Glaze to fix clear parts, I learnt that after trying to glue a gunsght in the roof of the canopy of an Owl. I have also done a number of courses with Scale Modelling Now, www.scalemodellingnow.com, I have no link with them, but they couldn’t be nicer people. I am never going to be as good as two of the members of our local club, but I can strive to close the gap, and they are always ready to talk over finishes and little tricks. I am edging out into weathering, but I am hesitant and don’t want to completely cock up £50 of kit, and loads of hours of work. On getting off paint there are lot of methods for different paints. Shout if you want some of them, but I suspect many others will join in.