Shopify & SHOP Store Sales Maximization

I already do steady volume on eBay and have taken the leap to my own Shopify site, with the native SHOP sales channel switched on. What I need now is someone who can turn the site into a serious revenue-driver... (Budget: £20 - £250 GBP, Jobs: Conversion Rate Optimization, Digital Marketing, Google Adwords, Internet Marketing, Keyword Research, Link Building, SEO, Shopify, Web Design, Website Optimization)