What should I do when he reads my love letter?

Hii!
I have given a love letter to my senior in which I have expressed my feelings, kept a bracelet and praised him for his goodness. I asked him to open it on 11th Feb (I can trust him that he won't open it before that).
We talk on insta even though we are in the same school. I was just wondering if there's anything I should keep in my mind while he reads my letter and replies to it.

Notes:

- He's known me for 6 months.

- He talks sweetly and puts others before him.

- This is my first time confessing to someone.

- I have just mentioned about my feelings, not asked him to be my boyfriend.

Updates
+1 y
Since he was out of station and reached home late on 11th Feb, he'll open it today on 12th Feb.
Updates
+1 y
Hii guys!
Finally, he read the letter and replied to it. He replied to it first time saying "No problem, it's great to know that you like me." When I asked him how's he feeling, he said "Happy and nervous because this is the first time someone told me they like me." Well, it was my first time confessing to someone. We continued talking about our daily life like we usually do for around an hour and went to sleep. (This was on 12th midnight).
Updates
+1 y
I don't know why but a sudden urge of expressing my gratefulness took over me.
We're still friends, but better. Things have been going really great between us. We've gotten a lot closer.
He has started making efforts to get to know more about me unlike before the confession. Our conversations sound more like besties rather than lovers. And, I am more than happy to have this kind of friendship with him.
<3
What should I do when he reads my love letter?
Post Opinion