How can i improve my English??

Recently,

my English teacher thought of a way to enhance our writing skills

He ask us to write our journal twice a week

I had tried hard on it

but teacher told me that"Oh no!You should be careful with your sentenses!"

I felt hurt when i saw on my sentenses that had been underlined by my teacher with his red pen

I could felt my heart tears...

I was silence when i get my journal paper back

I know that is my failure

I know i am using broken english all over my word

I know i could not use proper english to talk overall

Jia you for me! Wish i can improve myself...

Tze Ai