I think it looks like a fun track, and that's the whole point, right?
I think that it will probably change significantly over time as you learn what you like and try new things.
A couple things I've found are quite common in the end result of many tracks, which you might give some thought to, or try out when you are in the mood:
1) one long straight, as long as your space will allow, is nice to have so that you can really let the legs out on your cars. Just one per lap, though. Many laps means many chances to run that fast straight.
2) a sweeping turn somewhere, usually in or out of a long straight.
3) some technical turns to slow things down a bit. For some, that's R2, and for others (like me), it's R1. It looks like you're ok with R1 turns, and you've got them in a couple of good places.
4) lots of interesting curve combinations. Most people find that over time, having to move the trigger MORE in order to get the best speed at any point in the track is a good thing. Tracks with little more than fixed radii turns and longish straights in between tends to get boring very quickly. Fortunately, you've already got this one down pat. There are a lot of great curve combinations in there.
These are just rules of thumb suggestions, of course. Some people don't like some of those things, but it's always worth giving them a try just to be sure.
The good part about plastic track is how easy it is to change things around.