I find minimalist and simple design patterns to be the best look for things like icons and logos.
As for my studio logo, I contracted work out to an international who quoted me $18 an hour to create my logo. I already had some design ideas in my head that we had discussed prior to him starting work on it, and once the contract was signed between us, the guy was finished in just about 40 minutes and was sending me the file.
I'm not saying that they should all be priced liked that and work so quick, but it earned him a spot as a valued artist on my contact list that has gotten repeat service from me.
I personally, so no offence, feel that the work I see above isn't quite at the level for the price you request...but it's not that bad either.
Some suggestions I would have is to create more original icons to show us what you are capable of.
Here are some for inspiration that really kinda fit the look and feel that I think iconography is going these days:
Icons
My Studio Logo