Very nice for a first try! Your figures look nice, my only comment on the vignette itself is the colours, it all looks amazingly clean and freshly painted, perhaps dirty it up a little with some chalk pastels or a few dark washes.
As for the composition, it looks a little off to me... almost as though that lead man with the MP40 has spotted a killer ant on the bench, and all his mates are gathering around to back him up.
Perhaps you could spread them all out a little, even the inclusion of a wall behind the bench, and have them all forming up against it, the lead man taking a peak around the corner to see whats there (perhaps your first scratchbuilding project?)
Cheers!