Very well done. Adult theme yes, but yet very tasteful.
Sorry, but yes, your frames could be nicer and complement you work a lot better.
JFYI, I make simple flat frames, mostly from readiily available box store Poplar or Red Oak, and are 1 3/4" wide, not unlike the many better quality store bought frames from places like Hobby Lobby. Neat tight miters and tasteful staining that contrast/complement the panel makes tha overall presentation outstanding.
Simple frames like I make can be made on a table saw and do not necessarilly require any other equipment, like routers. I actually use a precission hand operated miter saw to cut my miters.