It can take a few days sometimes for images to get approved since it has to be approved by at least 2 art team members. I would wait about 2 more days and then just DM one of the art team members to ask.
Nothing is pending from you so check your events again to see if you got a message about it. You can also check the customs on the rules page of whatever you submitted the art for to see if it's there. If it isn't, you should have a refund event either in your events or specifically in your CP events.
When an image is submitted we are not aware of its public or private status, it doesnt really matter to us. Quality is the only real thing to care about. Ad yes, denial should result in a refund. Whether or not you got an event about it is the real question.
You go to the right section on the rules page and click the specific ship type. In this case you want this page. Then scroll to the bottom and you can view each of the available public customs and check if yours is among them.
Edited By: Syn on Year 16 Day 81 0:55 ____________
Okay, that's an entirely separate discussion. You posted an event of you submitting a new image, which you said you had set as a public custom, and the page I linked (or that part of whatever page you submitted an image for) is where it would display. That's the 250 CP deduction. Applying a custom only costs 100 CPs.
If your question hasn't been answered by now, you'll need to be more clear about what you're asking, because repeating the same information over and over clearly isn't doing the trick.