It takes time for sure, and there are no shortcuts. You hit the nail on the head with this one. I think it's also important to concentrate on making worthwhile posts. Really put some effort into it. When I first started here I would dash off a quick post with one photo and ten words. Those posts earned very little - what were they worth really? Now I take hours over one post. Whatever you are creating, whether it be music or poetry or photography I think it's important to put your best stuff out there if you hope to be rewarded.