英文求職信中的2段, 可否幫我修改+組織下, thanks

I was working as a/an ___ (the position) in xxx education center for primary students.
My major duties were checking their homework and teaching them on any questions. I am so patient to get along with different kinds of children.
By the way, I am also interested in art and design and I have skills in drawings and paintings.
Here enclosed please find some of my artwork samples. I will be glad to show you some more drawings I did through any interview.
(註: 對於你原來的寫法, 文法上和用字上有一些問題 - 例如tenses及用詞, 所以我在此所作的修改可能比較大, 希望幫到你啦~ 還有, 你寫的 " can show you my hand-made profolio/ drawings by hand during interview if you will", 紅色的字是重覆了, 而且還欠缺了一些禮貌, 所以我更改如上)

I worked as a tutor before in xxx education center .
I taught students from Primary 1-6.
I get along well with children, especially with primary school students.

I am interested in art and design and I know how to draw oil paintings.

Enclosed in this e-mail are some sample of my artworks.
I can show you my portfolio during the interview if you want.