First, you'll want to take apart the picture frame. You can set that aside. I happened to like the black frame (for now) but if you wanted to change it up, you could easily put a few very thin, even coats of whatever color tickles your fancy.
Here's what I used. Rust-Oleum Chalk Board spray paint. Super easy to use. Just remember the thinner the coat, the better. Just keep that can moving to get a nice, smooth, even application.
And that's it! Once you let it dry, you can start making your designs. I chose making a wreath first. I just took a string and wrapped it around my piece of chalk to make a (almost) perfect circle.
Just keep going!
It's never perfect, but that's why having a chalkboard is so great. Next week... or next season (whichever comes first) I'll have another clean slate.