Hi

What's the minimum requirements for submission e.g files, size, file type, sharpened or unsharpened, etc?

Thanks

i assume you are talking about fotolia since it is in the fotolia board.

size: 2 megapixels (MP)
type: jpg with sRGB as the colorspace
sharpened: it is up to you
other: you can edit the files however you think is best.