I am proficient in all the front end (html,css,js) developing technologies you should need to add some new features or design choices. However, at this point I can't say for sure how I can help you due to the fact that you yourself haven't presented a problem you want solved. I hope you will choose me and I can create all the features you need.
P.S. Don't mind my new account, I will try my best to get my first 5 star reviews.