Content writing is much like writing advertorials for my advertising clients. You need to charge an hourly rate, not by the word you are charging for your time and your worth. If you have to edit and create videos, which is part of the time you spend creating. You should ask for at least somewhere starting at $500.00 minimum per project. The number of followers does not mean that the client is going to make money. You have to know who you are targeting within your niche, you have to reach at least 200 of your followers, and you want to bring them into the interest/consideration stage of the funnel.