Sprawdzenie listu:) -bardzo ważne!!

Witam:)
Mam ogromną prośbę o sprawdzenie listu:

Dear Peter!

Thank you for your recent letter. I'm pleased that everything is fine with you. I'm sorry, but I can't accept an invitation, because Christmas I'm spending together with my family.

Very much I like these Christmas. They're exceptional. The Christmas Eve from the morning I'm preparing delicious dishes with the mum, leter we're decorating the Christmas tree. In the evening all familly is arriving to the dinner. We're giving each small presents, singing Christmas carols and at night we're going to the midnight Mass.

I'm writting to invite you to christmas. It will be great! I promise that I will show you my city and surroundings. You're always welcome in my home.

Anyway, I have finish now. Give my love to your parents.

Best wishes
XYZ

I'm sorry, but I can't accept 'an' (ale o jak invitation chodzi, czy to od niego?- bo wtedy YOUR invitation, because THIS Christmas I'm spending together with my family.

'Very much I like these Christmas' (prosze napisac to wg ang. gramatyki...I like these....).
ON the Christmas Eve from the morning 'I'm preparing' I PREPARE delicious dishes with 'the' (a kto to jest THE MUM- czy to twoja mama? wtedy MY) mum, 'leter' (ortog) 'we're decorating' WE DECORATE the Christmas tree. In the evening all 'familly' (ortog) 'is arriving' ARRIVES 'to' FOR the CHRISTMAS EVE dinner. 'We're giving' WE GIVE each OTHER small presents, 'singing' SING
Christmas carols and at night 'we're going' WE GO to the Midnight Mass.
>
I'm 'writting' (ortog) to invite you to Christmas.(Christmas zawsze duza litera)
I promise that I will show you my city and ITS surroundings.