Reward people for choosing you. Loyalty programs and newsletter sign-ups are great ways to give quick discounts and encourage repeat business.
Have a remarketing strategy in place to keep the exact product a customer was looking at when they were in your e-commerce store, while they are cruising the internet.
Stay on top of SEO by having good product descriptions.
Engage your customers by having a social media feed on your website.
It's important to make sure your site is mobile friendly. So they can interact with it or any device they are using.
Having clear calls to action is the key to convertibility.
Incentivise product reviews by offering promo codes to people who already have purchased your product.
From a design point, professional websites are always going to be way better than anything DIY websites.
Increase your reputation with your customers by using trust badges and testimonials on your storefront.