About learning more Python? Code up something interesting, or join an existing project and contribute.
About starting freelancing without a track record? Right now it's difficult, though maybe that's cyclical. But basically look on Craigslist and so on for help wanted. Stay away from bottom feeders like Fiverr. There is a monthly "who is hiring" post on Hacker News and a similar post for freelancers (mostly work seekers) but the entry barrier there can be sort of high.