The open space does fit well. Great placement of the figures, gun and kettenkrad! I remember building that PAK and servants, when I first started. I enjoyed it immensely. Did you apply a camo pattern under the net on the PAK or is that the net, itself? It's amazing how you notice things you have missed, in a photo.
There are a few things that seem out of place. What is the live ordinance doing in the middle of the street? Where did the road wheel come from? The axle on the PAK appears to be bent, from looking at the first photo. Very original on the spent shells leaving the mg. I've considered doing something similar using clear foil, instead of styrene strip. The biggest "no, no" is the seem lines where the arms attach to the torso. All else can be explained away; and, there-by is trivial. Putty, sand, putty, sand, putty, sand; until there is a smooth transition. I've found that auto body putty works best. It takes me an average of three applications to make the transition smooth.
Overall, GREAT WORK! Much better base than I think I can do. Like I said, everything goes well together. The posters are a nice touch as is the missing light/lantern. Be aware of seems and keep on building!