To help me out I make a guide for myself its easy to get lost on a big model and nothing sucks more than realising you've painted something you wanted to keep bare metal.
I use the MWO textures as a guide but personal preference I don't like to much metal on show so often I'll paint it.
I use tamiya 6mm masking tape since its semi transparent and comes in a handy dispenser. I also have some normal size low tac tape (the blue stuff) and a few 2mm and 3mm for detail masking (personal tip get the paper versions not the vinyl it bleeds). Sharpe blade trims the excess, tooth pick/dental probe for poking and back of a brush to press it home. Also if you don't tape to stick to you or your tools wet/damp them.
If you're wondering the colours I use for the base coat I've change it some;
- Black spray primer
- Tin bits, gunmetal - dry brushed
- "Lifecolor Acrylics LC-CS10 Dust and Rust Paint" - 1-4 rust airbrushed on
- Clear coat
I moved away from orange washes, since I bought a more reliable airbrush (less jamming) and washes can be hard to control, takes while to dry and make a mess.
So for the next week I'll be finding bits of yellow masking tape stuck all over me.