I made all of them for you, so you can avoid them.
What are they? 1. Visual > Functionality 2. Starting with a landing page, not wireframes 3. Mobile second 4. Making the website just to have one 5. Making the website just for themselves.
1. Visual > Functionality
This is an obvious trap. And it's really self-explanatory.
You may use beautiful colors but if the structure is a mess, it doesn't matter.
This is the question I get a lot, how to make a recurring income as a web designer?
In other words: how to make a recurring income instead of one time sell.
Here are some of my most favorite ones.
1. Hosting and domain renewing
This one is the most straightforward one.
For the customers, it's usually painful to keep track of domain registration and hosting and if you offer them a maintenance fee they most probably won't refuse.