Hi Mizis,
Your store looks good to me. I'd focus more on adding descriptive keywords in your product titles and more copy in descriptions. Search engines look for keywords that people use in their replacement.
Also, I'd focus on social media promotions. The more outside links you have for your product pages, the more chances for people to find them online. Search engines like when pages have many links too. Check help articles related to
promotional tools. Hope this helps.