Please help me check the letter of thanks to make it fluent, coherent and natural.

May 3, 2012

Dear Lucy,
I am writing to express my sincere thanks for your beautiful flowers. These are so beautiful and I have put them in the vase in my bedroom. I shall ever remember this gift as one of the most precious things in my life. I really want you to visit my house and to have dinner with my family. Hopefully you are free this Friday night. I will contact you then.
I repeat my thanks again for your lovely flowers.

Yours sincerely,
Lily