This isn't exactly pixel art so I moved it over to the Art & Design main forum. Also, you should try to make some custom bead-art instead of replicating the Pokemon sprites, because there's not much you can critique about copies of the original sprites. Although it is a great feat to have beaded up all 151, try some new stuff too!
I'm sorry if this comes off as offending, I don't know much about bead art.