Well it would help to know where you located and what type of miniatures they may be, Some of us excel at different types of sculpting. I am one of the better sculptors at mecha and Machines, I suck at humanoids..
So more details might get you a better response.
Also 38mm is going to get you a huge amount of flack from the painting community as a whole. The standard is 28mm, but of course things do tend to get a bit \"Bigger\" but becare on quoting scales.. and remember 28 or 38mm isnt a scale..its a size.