Currently Being ModeratedJan 31, 2013 7:49 PM (in response to Teddygold)
Best to wait until you have your finished art work ready.
Make sure it is 1,400 x 1,400 pixels - .jpg (RGB) or .png
Make sure it looks good when shrunk down to 55 x 55 pixels as well.
Currently Being ModeratedJan 31, 2013 11:00 PM (in response to Teddygold)
You can change the image later - if you do so, make sure to give the image a different filename - but the Store can be very sluggish about images and it can take some days both to show the original and to show a changed image. If you can manage to wait until you've got the proper image ready it's probably preferable.