are the tenses and constructions used correctly?
I am going to walk later (you only use the near future for actions that will occurr in a few mintues, for example: "I'm gonna get a glass of water".
/ The Present Continuous Tense/
I’m reading a book
I’m eating a banana
/The Past Continuous Tense/
Yesterday was raining.
/The Future Continuous Tense/
I will be reading a book tomorrow.
/ Is it correct to say this at this time The Present Perfect Tense?/
I have eaten a casserole in Tuesday.
She has cooked a casserole in Sunday.
All of the rest are correct. I hope that could help you.