Thank you, Goober. My most recent results tell me that I don't return heavy-topspin groundstrokes well, so I know I need to work on hitting such shots on the rise. I also tend to overhit my forehands (for a while I hit too softly), hit my net volleys right back to my opponent instead of angling them away, and rely too heavily on my slice backhand instead of hitting a strong one-handed shot. (I'm a lefty.)
Video-posting is a good idea. I'll try and arrange for my next match to be recorded.