Good thing you're trying new stuff.
It's a very good start, that's what I can say but it seems like a wip atm.

I would suggest you start adding in more inside shapes onto the current shapes you have now to add more detail.
Even your background. Try adding a design (not circular) to it so it isn't completely boring.

The connectors are pretty cool and I think you should try adding some drips.
Detail, my friend. That's all it needs.
Kiu!