What is it called when someone copies your writing skills?

It sounds like education.

My goal as a teacher of writing is for the students to

first, follow my example,

second, add small changes,

third, make many changes.

Writing a good introduction: a writing skill.

Following the blueprint of that intro through the body of your writing, a writing skill.

Using metaphors and analogies to explain some of the details in a memorable way? Another writing skill.