Zou iemand mijn engelse brief willen nakijken ? *kijkt heel lief*

Zou iemand zo lief willen zijn om mijn brief in het engels even te lezen/corrigeren. Ik ben ontzettend slecht in engels en we moeten deze brief morgen inleveren.
Dit is echt geen smeekbrief haha, maar ik zou het heel fijn vinden dat ik ook eens met iets 'gramaticaal' goeds aan kom morgen!
Het gaat maar om een kleine brief. Is de grammatica goed? Zinsbouw of moet ik het anders formuleren?

Alvast bedankt he!!

Dear Alan,

Thank you very much for your Christmas greetings! I wish you and your family all the best and a happy new year!
Off course I had to write you sooner. I don’t want to think up an excuse, but I have to confess that I’ve been quite lax the last periode.
But, how are you and how is your family? My family is doing excellent!
Unfortunately, I have to work properly hard in the 4th class of HAVO, but my father tells me that it is good for me to work hard.
What I still wonder, are the pictures, you made during the holiday succeed? If so, would you like to send me those pictures. I would love to have them. I will pay all the forwarding-charges, that speaks for itself.
Have you already made plans for the holiday next year? Have you decided to go to the same campsite or would you like to spend the holiday in your own country? Please, write me back soon!

All the best,
Claire