This is my QSL card. 

If you're curious how I made it, I used a Photoshop template made by AB3DC, Dinesh Cyanam.  He has open sourced it and uploaded it to GitHub. I followed his directions, made a few changes of my own and used GotPrint to print my cards, as the printing guides for GotPrint are included in the template.

Note, despite what it says in the GitHub readme as not conforming to USPS standards to be sent as a postcard, I have had no issues sending it as a postcard so far.