I have had this work done for a few weeks, but with work on the house and an exam coming up, haven't gotten back to it or posted anything new in a while..
Since last time:
Did some filters using Windsor and Newtown Yellow Ochre.
Did some dark washes around small highlites and ridge/transitions.
Did some dot filtering on the sponson sides and turrent using oils - White, Yellow Ochre, Raw Umber and Dark Blue.
Some fading with Dark blue in recesses.
And applied some pigments to simulate dried mud and heavy dust.
Still want to work the pigments on the wheels a bit, I want to put some streaking grime on the sides and I want to fade some of the modulation transitions.
I am moderately please with it, I have learned some things about what steps to do and in what order. I should have done more fading before pigments, but it is turning out OK for me.
Progress so far..