I had a hard time finding oval frames that I liked, so I used just plain old oval wood cutouts found in the wood craft section of Hobby Lobby ($2.99 each). I slapped a couple of coats of black acrylic paint on them and let them dry. After taking the silhouette pictures, I sized and printed them off in black and white, taped it to a black piece of cardstock and cut them out. I'm sure there are a lot of different application options, but I used Perfect Paper Adhesive because it acts as a glue, sealant and offers UV protection.
Cut out an oval from printed scrapbook cardstock and have it and your silhouette cutout handy. Quickly apply a thin, even coat of the adhesive all over the top of the wooden oval. Center and press the oval paper onto the wood. Repeat, applying more adhesive over the entire oval paper and center and press on your silhouette cutout. If you apply your adhesive too thick, it will wrinkle and pucker your silhouette, so keep it thin! Allow to dry and apply another coat all over the frame, including the wooden sides. Allow to dry and apply more coats of adhesive as desired (I only did one because I'm lazy like that). For hanging, I just hammered in some frame "teeth" on the back.








