If possible,
please correct my sentences.

Situation:
I'm writing some advises to my friend.
We're taking teacher license course at university,
And yesterday he lessons English lesson to us as a teacher and I'm as a student.

Thank you very much for your lesson.
The illustration which you drew in the class, it's really useful and help the students understand easily.

I also think...that's it!
The illustration shows everything about WILL and BE GOING TO.
But ... we will be teachers so sometimes we need to give some explanations about it and remember the way of thinking of students who belong to junior school, 2nd grade.

But in my opinion, I think ... there are a lot of English teachers and each teacher has good point so when I take some lessons at university,

I accept all the style of lessons.
And of course
I like your style of lessons.

I especially like how to translate English sentences into Japanese.
In my opinion,
I don't want to read over the sentences again.