Amazing work really! I like the WW2 bust alot, that face is full of life! The only thing is that the eyewhites could be a little more white, but not much. Really great work!
I can\'t see the images you linked in this post, but I checked your gallery and the German Officer bust looks very good. Excellent flesh tones with a good degree of warmth (pink/red) to them, and very smooth blending.