Developing or creating a website design is not enough. Having the contents for the website done means you must check and double check so that you are sure there are no mistake or punctuation errors. The spelling must be correct and this should be given more importance as you cannot afford to lose a potential customer over a typo error.
If your email is linked to the site, ensure you receive a few emails through the site from your family and friends at least. If you order from your website for the products you must run test orders to know if the system is functioning correctly.