I would say the same, try to focus on gig detail description. Meaning, for the prices you ask, you could elaborate on the services you provide in your descriptions.
Also, I agree with you that you need more orders to get more reviews, however, you should let customer satisfaction regulate your prices, not your view on the quality of your work. It is always a good thing to be confident in what you do, but if you don’t market through any media, or freelance in any other way as ‘proof’ of quality, you really will have to rely on customer satisfaction.
If you do market or freelance, than I didn’t say anything
In any case, best of luck!