My apologies for the late reply. Thank you for your explanations and suggestions. I learned a lot, and I look forward to taking your lesson again.
I appreciate you pointing out not only vocabulary and grammar but also sentence structure and writing tips.
Thank you for your kind comments! They boosted my confidence. I will keep studying English hard to become capable of composing essays in the literary style as you suggested.
Thank you for your detailed feedback. Choosing formal words and styles is still difficult for me, so your suggestions were very helpful. Thanks again!