Hi there P (Peter or Paul or 3,1429..??)
first of all, welcome to the asylum! Wish you get as much fun out of it as we do!
Now, regarding the figure:
of course, the sheen is the main problem. I have the feeling that the lighting might be responsible for some of it (too strong, too direct (look at the bright spot on his right shoulder!), but you must get rid of all of it!
Get inspiration and help from the web o.s.! This is primordial!
I would personally suggest to tone the uniform coulour more towards the greyish side (if we talk 1940/1941). For that I send you a PM (check your inbox!)
As far as eyes are concerned, I left a comment recently, based on Shep Paine's opinion that you hardly see more than a dark line when people squint in the sun.
Don't believe anything...go and verify! Look at people so far away they become "1/35"...and see for yourself!
I like the lower half of your face a lot!! Well done indeed!!
I don't know what is responsible for the odd colour on the K98 stock, but the greenish tint is not recommended!
And the K98 must have a Gewehrriemen!
When you do figures, there is more to it then just brush-strokes. Look at the right hip of the guy...and you see the molded on straps+buckles for the Brotbeutel....but the Brotbeutel is not there!!
It reminds me of a friend who put brilliantly executed and wonderfully realistic rust...on a M113!
You must know your topic! Otherwise you get into troubles!
No german soldier would have been without Muntaschen, Brotbeutel, water canteen, Essgeschirr, Spaten, Seitengewehr, Zeltbahn and respirator container. These elements were part of the minimum gear suspended on the Trageriemen (Y-webbing) and Koppel.
Hope that helps!
Cheers
Romain