Do you know that it costs money to submit a proposal? I don't think that you're ready for that yet. You should get to know the community before you try. But there is something else that you could do.
You can organise a meet-up, with some friends or at a local business. You can give them each $10, and you will be paid.
See here:
I received 3 Dash for my efforts. You could do similar.
The most important thing, I think, is that you need to show the community what you are doing. Via photos or blog posts or videos.
Cheers!