Hi John
That's a nice bit of figure modding, the camo is particularly nice - a good representation of the German 'pea' pattern camouflage.
I'd agree with Ron, practice is the way to improve skills. I've developed a style and a technique for painting my figures that I'm quite happy with at the moment, but would hope to improve.
A lot of modellers would recommend you use oils for flesh tones as blending tones is easier. Personally, I still use acrylics and I'm developing a blending technique that I can work with. Figure painting, and particularly face painting, is (I believe) the most difficult modelling skill to acquire. Facial recognition in people is a very instinctive sense, we are programmed to recognise the slightest differences in facial expressions in one another, therefore a face on a model figure needs to be very good for it to be convincing.
If you're interested I might do a tutorial on my next 120mm (1/16) figure and show you how I go about flesh tones and painting faces. I don't see myself as an authority on the subject but if you like the Tommy figure I can show you how I achieve that effect.
That aside, I think your figure is a well modified and, as Ive said, the camo representation is good. One small observation is that I think your barbed wire is slightly over scale and seems a bit thick. Also, visually it seems very dark and (to me) detracts a little from your excellent figure.
Keep up the great work John. Personally speaking, I can see an improvement in this figure over your last, and I think bodes very well for future projects if this level of skill keeps getting better!
All the best
Paul