First of all it's great that you've been able to attract local traffic to your website. It can be a valuable source of revenue! Now to convert those browsers into buyers :)
The first step is to find out why your potential customers aren't buying. Lucky Orange and Heat Map will follow your customers around your site, and help you see where they leave the sale and why. You'll see any errors on your site and be able to correct them right away!
We have some really helpful blog posts which will help you make some vaulable changes to your site and help improve conversions. Start with 6 Bulletproof Ways to Improve Conversions on Your Product Page, 4 Checkout Conversion Killers That Drive Your Buyers Away, and Why Every Shopify Store Needs a Marketing & Sales Funnel.
You can also grow your site's reach away from just your local customers. You can start by improving your store's SEO. Google Adwords can be a really cool way to drive traffic to your site! Read up on our Shopify Google Adwords docs. Our Google Shopping app is also another way to reach a whole new audience!
I hope that gives you some good ideas on how to improve your conversion :) If you have more questions the guru team is available 24/7, please get in touch!
Lucky Orange: https://apps.shopify.com/lucky-orange
Heat Map: https://apps.shopify.com/heatmap
6 Bulletproof Ways to Improve Conversions on Your Product Page: https://www.shopify.ca/blog/53641349-6-bulletproof-ways-to-improve-conversions-on-your-product-page
4 Checkout Conversion Killers That Drive Your Buyers Away: https://www.shopify.ca/blog/51360261-4-checkout-conversion-killers-that-drive-your-buyers-away
Why Every Shopify Store Needs a Marketing & Sales Funnel: https://www.shopify.ca/partners/blog/72569987-why-every-shopify-store-needs-a-marketing-sales-funnel
Learing about SEO: https://www.shopify.com/videos/ecommerce-seo-101
Shopify's Google Adwords doc: http://docs.shopify.com/manual/your-store/2-dashboard/7-google-adwords
Google Shoppping app: https://apps.shopify.com/google-shopping