If you're looking for a custom item you have a few good options.
If you find a seller you particularly adore, from the left sidebar of their shop page you can follow the link to 'Request Custom Item'. This will open up a conversation to start a discussion of what you want and how they can help.
As mentioned you can also check out custom order teams. You can post a request and find sellers interested in making custom items.
Check 'em out here: www.etsy.com/teams/search/custom
I hope this helps!