-Beautiful cake, but it seems to be a little tilted. I also can't help but be distracted by the background. It's dirty...? I'm also not too fascinated by the, what seems to be a magazine at the lower right hand corner.
-Again, beautiful cake. But it too seems to be a bit crooked. Nothing major though, it's an easy fix in photoshop. I guess what bothers me most is the lack of sharpness... Maybe it's just me, but it seems that the cake is not entirely in focus, and/or is missing some sharpness.
-Same as above ^ but that sharpness is a bit better in this one. Good overall shot. Perhaps the lighting could have been a bit more controlled, and/or reflected to balance the shadows on the cake, but it's fine.
-Interesting angle and perspective. The downside to this is the grain, but if you have any grain removal software/plug-ins, it'll be fine.
-Same as the first one's regarding the tilt.. But nice perspective. I like the sharpness on the shapes behind the "kitty thing"
but I wish that sharpness was also carried a bit more onto the subject.
-Very casual shot. Not too bad. The "Round _____" Sign is a bit distracting though :\
-Another beautiful cake. A bit tilted again, (Sorry), but I wish you had framed the cake so that the left side wasn't cut off like that.
Now just an overall "cake advice tip thing" that I'll include. Because most cakes, (most, not all) are lighter colors and/or white, they will absorb more light. So lighting is crucial for some cake shots. You really need to control the light so that the cake is not overexposed and bright.