You need to upload it to your picture albums you have on your profile and the album has three settings "Public", "Private" and "Profile". You need to set your album to "Profile" to set up your profile designs. I once made the same mistake when I was only new to supportership last October.
I'm on the side that doesn't like it too much. The region was good... The characters were alright.. But the Pokémon weren't to good in my opinion. But my opinion is different from yours so il respect that