I have to agree. "Sniper Attack" is one of the best dioramas I've seen in a long time, I think. It does look like there's a nasty seam running down the leg of the guy on the ground, but that might just be the lighting or something.
I'm also wondering about the time frame of this dio. If I'm not mistaken this is an Ausf. H, but is using an air recogition device, which I think would have been used more prominently earlier on?