Dear Mr. Brooke,
I am writing to apologize for breaking the glass of your last week. I am so sorry. I am extremely embarrassed about my behavior and I accept full responsibility for what happened.
The incident. occurred in the morning as I was at your table. My intention was to paste the work it on your desk. But unfortunately it has been robbed of your glass.
I have offered to help me pay for the broken windscreen, and so I would be grateful if you could inform me of the appropriate amount when I see you on Monday. Once again, please accept my apologies for the inconvenience I have caused.
Yours sincerely
Thuwanon Baiya