Andreas,
I like the figure myself. You're start is promissing, but for the chainmail and armour you must more highlighting and shading.
What i see on the picture's (that's it; pictures) that the chainmail is covered to much with paint. It seems a blob of paint. Maybe it is not well casted and therefore not outstanding, but i think you must to try to define the chainmail better by highlighting and shadowing.
Marc.