While there is no set amount of time it takes, it has been my experience that it takes about a day on average. There are many factors depending on who is on at the time of the submitted and how busy those accepting the images are.
What Jawa's lack in feet they make up for in inches.
Custom items are reviewed by the Art Team staff just like any other custom image pending. The items themselves are immediately spawned after they've been accepted. In case they've been declined, a message will appear in your General Events tab saying your custom item image has been declined and an appropriate reason and also sometimes a way to also fix it.
All you need is just a little patience. Your custom item has been reviewed by the way.
Edited By: Ryan Roche on Year 10 Day 252 15:45 ____________