5 Top Tips to Improve Your Online Store with Sellr.   When you're running an online business it's easy to overlook the simple things that you can do to improve your online shop. Here are my 5 top to do's for a successful store.    1. Do browse your online store on different devices to check that it looks just as awesome on your mobile as it does on your desktop.   2. Do check your promotions and featured products are relevant and up to ...