Is it possible to get a RSS feed for the new articles I've created on Wikipedia?
You can get the feed if you check out the New pages watch and filter for your name only.
Toolbox > Special Pages > Recent changes and logs > New pages
Enter your Wikipedia handle in the Username: field
You'll then get results showing all the newly created pages started by that username.
Grab the "Special:New pages" Atom feed that is created for that result output.
The URL for that will look like this:
Replace USERNAME in the above with yours.