Transparent images rejected due quality reasons

I noticed in fact some errors in those images but i cant find in heart shaped roses

By @Łukasz36492628nnwl

As a newcomer, you can't edit your posts. You need a higher forum rank to be able to do that. Forum moderators can do that for you, if you inadvertly shared some harmful or private information. I'm a forum moderator so I could assist you in that. But checking your message, I do not think that there is anything that needs to be edited. To add information, you can simply reply to your post as you did.

Now, for your fifth asset:

I've pointed out some of the errors I saw. 

When doing a cutout job, I use the stroke effect in Photoshop as an opticat helper to see my leftovers and the places where the job has not been done correctly. 

Your job is not too bad, and depending on the application, it would be great. 

Also, looking at the picture as an overall, and that was my first impression, some of the cutouts look like errors. Remember, the moderator has not much time to appreciate your work. If his first impression is that there is an error, they will push the refusal button fast enough.