Click on Account up in the left hand side at the top.
Scroll down and click on Eden Points Program.
Look at the activities to do and do them.
Be active in the forum.
Read reviews and vote/comment.
Submit your own reviews, try to add more detail. Get a mentor to help you out or check out some other reviews of a product you are doing and find the detailed ones and see their style to get some ideas in improving yours. Yours are good but they need more detail to get better votes and make your score go up.