Right, it was OK, but I'm going to try and give you a few pointers and they're in no particular order, just whichever comes to mind first.
-Use more segments! You want to try and use more segment s over the entire ride. Not only does this give you more control over the shaping, but it will also life easier when you come to smooth it (either by hand or with the in-built smoothing tool, Ctrl+G). Generally, and this is not a strict rule to follow, each case is different, but I would suggest around 5-10 segments for a medium sized 180* curve. By using more segments you can also make the lead-ins better, thus reducing the feeling of pumping. For example on this ride the overband and corners at the end did not have enough segments, which just made them feel very... awkward.
-Heartline! I don't know it you have the heartline turned on in your editor (Display>Show Heartline) in each view, but it is a very useful tool for creating flowing tracks. On your non-inverting-loop for example if you look at the heartline it is extremely wiggly, meaning that the riders would be thrown around a lot. You want to try and get the heartline as smooth as possible, which is also made easier by using more segments (see above).
-Don't force elements or banking. The only way I can describe this is to look at your final two corners that were both banked at 90* (or nearly). They just don't feel right, think about how the track looks and feels, banking 90* corners on dips doesn't work as the rider would get quite a few laterals. That one you can only learn by experimentation.
I think I've covered everything major. Your supports just need practice and generally you've got the right idea, you just need to get all the little techniques sorted to make great coasters.
Hopefully that's not too harsh and hopefully you'll find some of it useful! Oh, and by the way, I'd give this ride a 4.5/10