Essays / You have had an accident and can't go to your friend's party. Write a card to your friend [5]

Dear....
Thank you for your invitation, but I really sorry to say that I can't go to your party since I have had an accident 3 days ago, my leg was broken.However, I feel better, but still can't go to your party. I hope we will meet each other as soon as possible.

Grammar might be incorrect, sorry for that. I hope this example will help your writing.