You might post your url in the site and designs review section (subform under the E Commerce forum) to ask for suggestions on improvements.
I've been working on my site lately in two areas: improving page speed and rearranged my navigation. While I've improved my page speed score (see Google Page Speed Insights) that hasn't improved my rankings but maybe its too soon to tell. When Google rolls out its "mobile first" ranking things will change. I rearranged my navigation to be more user friendly and similar to other apparel sites and in the process, I removed some repeated links and unnecessary pages which should also help increase page speed.
What's next for me? Add more unique text to pages, publish blog articles and implement leverage browser caching.