Originally Posted by mandmscreations
muchkinbaby has some for sale on Etsy.
If you are looking for a tutorial, this is the best one. It's only 5 dollars and it comes with a template for GIMP/Photoshop depending on which one you buy, and it has a PDF of instructions! If you have any questions about things that are not covered in the tutorial, please PM me and I can see if I can help!
Also, you can search the forums and you can find a bunch of different little 'improvement' tutorials.