I understand that people want to work and make money, but if you can’t do the work – say NO.
If you don’t know how to do the work – say NO.
Don’t tell me that you can do it when you can’t. Don’t tell me that you’re a professional in this field when you obviously aren’t.
If someone asks you if you can do A, B or C and you can’t (and you know if you can or can’t), then you need to understand the importance of saying “no”.
Just say no and let someone else handle it.