Hello, none of the photos were accepted due to poor quality. What is the reason?

[Giddy_care9143]

[daniellei4510]

First one: exposure, focusing, and a composition that is too busy.

Did you add the lighting effects manually? That's usually not a good idea.

[Nancy OShea]

Lighting is uneven.

Too dark in places.

Not much warmth or visual interest.

Compare yours to a similar photo in Stock inventory.  What does this image have that yours doesn't? 

[Jill_C]

These are all underexposed, with some lighing and compositional issues as well.