To upload the the image you must create an account on a image hosting site such as tinypic or photobucket. Then upload the image onto the hosting site.
After uploading copy and paste the link into the body of the ticket.
Also just to make sure, when trying to Evolve your Aquarius R+ please makes sure NEITHER the Aquarius R+ and Aquarius R are under "Sacrifice Protection" or in a "Party".
Just a reminder parties cannot be changed or edited 1 hour before a GvG battle.
Please check and try Evolving again, if it still persists please do not hesitate to reply to this thread.
I like your diagram!