Like number 1, but would remove effect on the desk itself. It would then create a 3D effect.
1 has the most impact, but 2 has a completely different meaning;
Like them both, but I pick 2 as the one with more longevity.
Very imaginative. I prefer the first one. I usually do not like frames around the picture but your framing really makes the pic stand out. Good Work!
#2 B &W with the "Light from Above" agree with ArtBob do away with the oval and it is the best.
The order I'd go with is 1,3,4,2. One is really striking, and #2 gets lost in all the borders, 3 and 4 are nice, but kind of ordinary...probably great stock images.
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