The covers look alright, mostly just need a few tweaks.
On Speedy, Nice work on the front, I can give you a sharper ESRB and Seal.
On the back, Use a stroke around the Speedy image to bring out the white line more, The Screen shots need some cleaning up.
Mega Man X: Replace the Grey SNES and seals with vectors, and the contrast needs to be raised a bit.
A Taz cover was already made with sharper scans(Look a few posts up), and I fixed that one up a bit, I have not posted it in this thread yet:
https://app.box.com/s/gtli3d0rdzgdm5w3fnny
Though this one has the wrong copyright, but yours is correct, I may paste it over to make it fully retail if you don't mind.