First thing you need to get your portfolio completed, and make sure there is something recognizable.

Get some experience from sites like
odesk
Guru
Freelancer

these sites are full of outsourced teams that do the same work cheaper - but at a rubbish quality

Freelancers from the US are regarded as premium rate and premium quality simply from being from the US. Another Option would be to partner with a quality outsourced company that has a strong portfolio ie making apps for companies like Mc Donalds - and have them be the source behind your development. I have a couple of contacts that would probably be perfect for that actually - they don't cost the same as typical outsourced companies but the quality speaks for itself.

Once you have the portfolio, a small design team working on Mock Ups is all you need to get your sales.