These are some nice, above-average snaps but you can tell where you used the on-camera flash (harsh shadows, etc) to ill effect.
#1 has good exposure but some pretty serious hot spots. Those can be fixed in post most likely. The composition is not interesting.
#2 The flash hurts this image. Some potential with the composition, but having foreground and background in focus means the whole image is the subject. The hands are posed awkwardly.
#3 Bad flash, boring composition, deer in the headlights look.
#4 is cute but again, the composition is very centered. This is one of those great opportunities to get down on the level of the child rather than look down on them. The selective coloring is well executed but i don't think it works here.
#5 has some things going for it in terms of composition but the negative space at the top is not necessary. A tighter crop might serve the image better. The B&W conversion is bland and could use some massive boosts in terms of contrast.
#6 This one is very nice in terms of filling the frame but the focus is blown and centers on the disembodied hand assisting with the veil, blurring the actual subject.