It's really hard to find somebody that is going to hire you when you haven't put your skills here. What you can do and what you can't do. Easiest thing is to try these bounty campaigns, but they usually will pay after the end of ICO and some time period with these, if you do them well, 50$ shouldn't be hard to get. Another thing you may try is to search on other job related websites, it doesn't have to be for bitcoin as you should be able to easily switch fiat for bitcoin.

Some freelancer websites for btc/crypto:
https://blockchaindevjobs.com/
https://www.reddit.com/r/Jobs4Bitcoins/
https://crypto.jobs/
https://www.xbtfreelancer.com/