Do you find this sentence awkward?

I become sincerely appreciative while thinking about your precious weekend that you must have sacrificed for this draft.

Unnatural.

How about this?
I appreciate you even more when I remember that you gave up your weekend to write this draft.

AnonymousDo you find this sentence awkward?

Yes, and it simpers a bit, too.

I appreciate your sacrificing your weekend to finish this draft.

You guys, thank you so much for your responses! For a non-native speaker, to make it 'natural' is the most difficult:) Could you possibly explain more what made the sentence sound unnatural? Because of its too literary tone? or misusage of any vocabulary? I wanted to emphasize 'the change of my feeling' to gratitude as thinking about his sacrificing time. In this sense, can I use 'become'? eg. I b

mook21In this sense, can I use 'become'?

Not naturally. Use the verb without "become."

I was moved while reading your letter.
You letter deeply moved me. (Simpler, more profound.)

AlpheccaStarsI was moved while reading your letter.You letter deeply moved me.

However, these are a response to an expression of great love, sorrow or tragedy, not to an extra weekend of work.