Your work has no seal, which may be due to practice. It is best to have a seal to be a formal calligraphy work. There are some problems with the border paragraphs, which are not specifically stipulated. You can write the source of the text, the time and place of writing, but to write them together, the paragraphs should be slightly smaller than the text, but they should not be too small. The size of the word "Li Bai's poems" is acceptable, but the word "Guisi Year January Book" is too small. In addition, after writing these, you should sign and stamp every two words. This can probably be called a formal work.
It is worth mentioning that your words are full of aura and your writing is very good, which shows that you are very talented. If you practice hard and find more celebrities to guide you, the future is limitless.
Personal opinion, I hope it will help you.