When it comes to designing your own website particularly in the case of an online store for business, the presentation always counts. If the website is elegantly organized you may get a lot of clients without trying. The viewers do not check out your products or their prices even if they are unbeatable but the background, the slogan and the heading of your website should be attention grabbing.
You must have noticed that while searching for a website, the search engine shows the name of the website, the URL and a little bit information about that website. If that is catchy and interesting people would most probably end up clicking on that link.
In a website the background, the heading and a sub-text which can include a business slogan incase of an ecommerce website is called a header graphic of a website. These tiny details are the first thing a viewer reads when they enter your webpage. Now certainly you do not want to have a boring heading or a sub text with a dull background. If your company is big and rich then hiring a professional graphic designer is ideal but for small corporations or personal businesses it will just be a waste of money.
Another option is to download some ready made graphics from the internet and use them but preferably you can have it done absolutely free if you do it yourself. If you do choose to make your own header graphic in that case choose an image editing software like Adobe Photoshop for a professional touch or you can go with Gimp which is free and available online.
You can cut and crop the background image which can be a picture of landscape etc and add a clip art that goes with your website. Have a heading that describes the theme of your website or business and spruce it up with a catchy slogan. Take your time in coming up with it as the number of viewers and clients depend on it.