Just don't delete this submission to make a new one. You have to keep this submission to stay in the challenge poll. You can replace the file of this submission, by editing it (the pen icon under your artwork). Replace the "Your Artwork:" file. Remember to change the file name. If you try to upload a file with the same name, PJ will ignore it and keep the previous one.

Unfortunately, your piece still has 11 colours. I'm accepting it, becasue right now it is an easy fix. Please do it until the end of the monday, otherwise I would have to remove it, to be fair to all other challengers.