Let me make sure I've got this straight, you've created a new element but it is in a layout? If this is the case, just copy and paste it into a new blank page. I usually do about a 2"x2" square (bigger than that the file is huge!). Then make sure you save a copy of it in a mix file (if it has layers) and then you do a "save as" select .png and you are good to go! Let me know if you need more help!

Amanda