You can design your shop banner using graphic editors such as Adobe® Photoshop.
For best results, your banner should be saved in .jpg or .png format with an optimum size of 1450 x 300 pixels. Banners with incorrect dimensions may not be displayed correctly. Designing your shop banner can be as simple as choosing a background picture and then adding your shop name on top of it (make sure it's legible!).
Shop banners are the first thing customers see, so make it memorable!
Click here to read Pinkoi's guide to making great banners.