T.I.E Bomber - pastels

Getting rather one tracked with the T.I.E Bomber at the moment, but its such a great design i can't help it.
Okay, over the pencil outlining of the panel lines i've put down some pastels for weathering. The Empire do seem to keep their ships spick and span, but guessing all T.I.E craft enter atmospheres, so they must pick up some muck, yes?
After that i've masked off the cockpit again and put on that light coat of Satin Varnish.