I do a lot of work through PPH and am happy to give feedback.
1. Put a real photo up. Even if it's just a rubbish selfie on your phone. Buyers want to know that you really are who you say you are and not a spotty teenager from Bangalore/Karachi.
2. Be more specific about what you can do. Cut the woolly stuff about "business development" and "growing multiple revenue streams". That's just business jargon. Having read your profile I am still no clearer about what services you are actually offering.... put things like "I can write business reports" or "I can manager your Facebook and Twitter feeds" or "I can build a website".
3. Put some stuff in your portfolio. If you haven't got samples, make some. You are not going to land work without samples as clients will want to see what you have done before. If you are offering "business writing" go and write up some web content pages, sales emails or newsletters.
4. Start bidding on jobs. Write a PROPER application, not something crass like "I can do this job." Tell the client WHAT you can do, HOW you can do it, SHOW them experience/similar things you have done before and tell them WHEN you can deliver. And stick to it.
Hope that helps. I have been freelancing through PPH for a couple of years and have found several regular clients through the site. It does take a wee commission, but not excessive.