I don't expect you to ask this question since you are a member in the bitcointalk it means you suppose to know that there are several ways of making money in this platform. Go to bounties section and participate in the bounty campaigns and you will be paid. Make sure you do your own research.
OP has a website in development, and he's looking for ways to make "extra cash" online. I think he's aware of the ways of making money on this platform, but he's looking for ways to make bigger money, I guess.
I would suggest to focus on what you already have, your website. If you think you already know everything you need for creating a successful website, you are wrong. There's always something to be improved.
You are absolutely right, in that regard all you have to do is improve and improve, no matter how good the site looks, it always has to be doing nice updates, the fact that you ask for new jobs online is something great, it Which shows that you have a lot of energy to spend and you need more ideas to continue increasing your capital, that is almost a rich man's thinking, because the rich always think about how to increase their capital.