Writing English essays

I've been making the same mistakes when writing my English essay. Even though I've been trying to solve structural issues. I don't mind it because I'm on the way to increasing my English skills. 

Today, I lightly reviewed the corrections. It made me realize my English development and problems. Continuing to write this diary takes the first priority now. I was surprised by my mistakes. 

I should've reread it. Pronouns, article, and prepositions are very difficult to use. Missing or adding too much of them are my common mistakes. I'm learning by trial and error.