I've only been painting minis for about 2 months now. I've been working on this Gravis captain and I've got a couple marines painted for a kill team but I find myself buying more and more minis. Anything I can do better besides drilling my barrels. Any tips on washes? I have nuln oil and I bought Liquitex varnish Gloss and Matte. I'm a little nervous about messing up the work I've already done because I'm new to varnishing and washes. It's all brush on btw