<human>: Condense the text into a few key points

I'm in a LDR with my boyfriend of 4 years. We're both 22. Although we have great sexual chemistry when together, sometimes the time between our visits is drawn out, and I start to get a little bored of the same thing he does every time we go to the webcam.

Usually he just jerks it, and will slow down or show me a close-up of everything if I ask. I've asked him to just be sexy as himself and do what he thinks I'd like to see, but he has a really tough time with this for some reason. I think it has something to do with him feeling self-concious as a male and not knowing what acting "sexy" should be like?

Honestly, I'm not even sure what specific techniques I can tell him to use. I've asked him about a few things (stripping, touching himself in different ways) but he never seems to get enough instruction from what I tell him. What can I say, I guess I suck at being creative outside my own being. 

Have any of you redditors out there been in a similar situation? What did you or your male SO start doing to turn up the heat in your LDR? I'd love to hear suggestions, ideas, and personal stories.
<bot>: The only thing missing in my LDR is sexy variety in what my boyfriend does over the webcam. What do you do specifically to turn on your SO through pictures and video? Any suggestions?