You would want to charge lower for basic web design than you would for programming or multimedia design. If you have multiple skills, price for them accordingly, based on your experience level. Flat Rate Many designers charge by the project. If you go this route, make sure you communicate exactly what the client can expect, and leave no room for misunderstanding. This way if the project goes beyond those expectations, you won't have to worry about not being paid for your work.
Some projects are easier to charge by flat rate.
Logo design or corporate identity projects tend to require the same amount of work. Once you've done a couple, you can get a decent idea how much goes in to each project. You can then arrive at a fair flat rate, which makes it less complicated for the client. Splitting Up the Project Designers can also split the entire project up. A flat rate could be charged for different aspects.