Hey Ledded. Thanks for the praise. I appreciate it.
I'd love to see you post more of your mini's.
Historically, I've used GW's Matt Varnish. Because of a couple of bad cans of it, though. I'm moving to Testers Dullcote.
What I do sometimes do, though is use gloss on 'glass items' and gems and things. I have a jar of GW's gloss varnish that you paint on with a brush.
The other technique I use is when I'm painting with a metallic paint and the matte varnish has dulled it down more than I want. I'll paint a highlight using the metallic again to put a sheen back on it. I do the especially when I want something like the Blue Metal I used on some of Privateer Press mini's. It might 'wear off' over time, but I haven't had a problem since the paint job underneath is sealed.
I hope that helps.
Game ON!
Nyrfherdr