I want help for correcting my letter

at "ielts writing general training task 1" i got this question :

You should spend about 20 minutes on this task.

Write at least 150 words.

You do NOT need to write any addresses.

Begin your letter as follows:
Dear………………………

A family member is coming to stay with you. He/she will be arriving by train in the morning, but you won’t be home until the evening.

Write a letter to your relative. In your letter:

• explain arrangements you have made for them to have keys and get into the house
• tell your relative how to get from the train station to your house
• say when you will be home and suggest what you could do together that evening

My Answer :

Dear……………

I thoroughly enjoyed when i have knew that you are going to
come tomorrow to my home , that's so great.
But unfortunately i have important arrangements tomorrow
, so it would be difficult for me to get you on the station.
Instead, you have to go to my friend Jack who met us on his
flat last month, and ask him for my home's key, and then get
the taxi and ask the driver to go to Omar market on Guardian
Square and over there you will find my home in front of the
market.

I most likely will be at home on 09:30 PM. when i catch you
up, we should make a long tour on the city. we may go to the
highest tower and watch the houses from the top. we may
also take some pictures of the moon behind the leaves of the
trees. A lot of things we can enjoy it when i come to you.

Best Wishes.

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Is there any thing wrong with my letter ?