Hello @Hamna_Rashid, welcome to the community, we're so glad to have you here!
Do you know what topic you will be teaching already?
There's a world of tips and tricks here in the community for every stage of your journey, but seeing as you're just getting started, I want to recommend a few resources that will help you learn more about the Udemy platform and how to create a great quality course! Check out the links below:
Teaching on Udemy FAQ: Answers to your most basic questions such as: how to become an instructor, how to upload a course, what are the requirements, the payment process, and more.
Actually I am very good at teaching, also, I am a nutrition expert. The thing is, what type of video do I have to provide to the students since I'm not comfortable in front of the camera. What do I do in this case?