Ah this was really just a mixture of acrylics. Createx Red, Jo Sonja Brown Earth and Warm White thinned down with water applied with a small brush and then blended with a q-tip. Like I said, it's really rough still, I'll be adding more colour and then airbrushing over the top to smooth things out.
Thanks for all the positive comments! Really appreciate it. I usually don't share any work online until it's finished but wanted to share this due to the lack of close up shots around currently.
I've been looking at how to improve the collar to more accurate ribbing and I think I'll look at some of the material used for t-shirt collars in a close colour I can dye. I did a similar thing for DID's U-Boat Captain to get his collar closer to the one on Jurgen Prochnow's jacket in Das Boot with some good success, but that jacket required a lot more work than I think this one will (full recolour and adding a zip). I'll airbrush some shadow and depth into the jacket and run some wire through the belt to get a bit more control out of it too.
There's a lot of little things to tinker with on this figure, which I personally find the most rewarding aspect of the hobby.
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All the hands still need to be painted too.