EDIT: I humbly apologize for how rude I sound. I should not have been this crass.
PLEASE NOTE:
I was far too rude in this post; I had forgotten, well . . . it's all too easy to forget that these usernames mask people. My original post read in a (regrettably) unkind and spiteful tone, even obnoxious; I apologize. I'm ashamed that I had ever forgot.
In a hopefully nicer rephrasing of the previous text:
—try to provide high quality images, preferably .png and with transparent backgrounds, though this is not necessarily (simply extremely helpful)
—try to wait until you can't think of more requests until posting; don't double post
—newly released artwork is already fine
—bumping requests is sometimes counterproductive
—make sure to read the thread to make sure that what you're requesting has not been done before
EDIT: Here is the Bowser request. I am, as usual, open to adjusting it.
EDIT2: The Peach request. The costume itself is modeled upon the Shadow Queen Peach from the Paper Mario series. Again, adjustments are available if needed.