If I understand the first part correctly you have one skill - "My storyboard skill is...". Then you state that your skill consists of more than just good drawings. I would suggest a slight change to - "My storyboard skills are about more than just good drawings."
Thank you for pointing out the part that I mislead the viewers. Now I see what my snetence should be.
I don't see how developing a storyboard has a connection with a principle.
Just because you have three main parts on your storyboards doesn't indicate that you are following any principle - this is your way of doing a job, these are the methods you use when constructing a storyboard.
I think I really have to find out how to use the word, principal, in a sentence.
Thanks!
I am going to rewrite my sentence like this......
My storyboard skills are more than just good drawings. They can depict stories which consist of an introduction, a climax and a conclusion. These are the concepts I bring into creating a storyboard.
Thanks