Your income will depend on a few things. Most importantly, it will depend on how many websites you are able to design. Secondly, it will depend on the price you charge your customer for the website you are designing. We will give you an indication of the price you may be able to ask (taking into account the costs you make, the competition's price, costs for web hosting and domain name registration, time you spend), but you are free to develop your own pricing policy.