First, be sure to have your own domain name and don't host it on a free host.
Improve on your content. Useful, unique and relevant content will pave way for organic linking. Ince other sites sees the value that you offer, they might just link to you organically - this will greatly help your
SEO.
Do both onpage (title, description, meta, etc) and offpage (building backlinks with keywords as anchor texts) optimization for it.