Thanks. I tried to slow it down later in the day. Keeping on a heelside edge was pretty though. Looking at the footage, it seems like I'm not leaning back properly and I can't seem to get my upper body to lean back while boarding.
Don't worry about leaning your upper body back too far, that'll make you feel awkward and probably go all stiff. Focus on getting your butt close to the snow and your knees more bent.
Here's what I mean... See how their bodies are upright but butts are down close to the snow, and knees are well bent?
Also watch this video, it's a great example of some medium speed really nice fluid carves. And this guy is wearing softboots on an off-the-shelf snowboard.