Firstly, in order to be provided with some guidance, I think you will need to mention what your line of business is?
Improving your sales online (sometimes can depend) on the type of product you are selling, what the market (online & offline) saturation is, what your competitors are doing (which you may not be!), and other aspects ...
Also, how long have you been in business? How / what are your existing customers/clients say about your products and services, etc.