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Hi Mark,
How are you? I hope everything is fine with you. I've got so much to tell you that I don't know how to begin.
As you know, in a few days will be Christmas. My family and I have to prepare for it. I have to clean my room and help my mum with cooking. Preparation to the Christmas are long but very entertaining and nice. Apart from cleaning and cooking, we decorate the christmas tree.
Christmas Eve is the most familiar day throughout year. I can meet my whole family. At first we give best wishes one another. On the table there are twelve different dishes. Everyone should taste all dishes. Later, we unpack presents. We like to sing Christmas carols together as well.
I guess that many polish families spend this time very similar. After the Christmas Eve, we go to the Midnight Mass to the church.
As always, I spent my Christmastime very well. I'm glad that I can spend this time with my family. At the end I can tell you that I had a fantastic New Year's Eve.

I'm waiting for your message.
Best wishes, Kacper.


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Będę wdzięczny za wszelkie poprawki i sugestie:).

As you know, in a few days IT will be Christmas.
I have to clean my room and help my mum with (tutaj brakuje przedimka) cooking. Preparation 'to' FOR 'the' (niepotr) Christmas are long but very entertaining and nice. Apart from cleaning and cooking, we decorate the Christmas (duza litera bo to nazwa wlasna) tree.
Christmas Eve is the most 'familiar' (to jest calkowicie zle slowo - co masz na myli to jest 'rodzinna') day throughout (brak przedimka) year.
At first we give best wishes (cos tu brak - 'do') one another.
Everyone should taste all (tu brakuje 2 slowa) dishes. Later, we unpack (przedimek) presents.
I guess that many Polish families spend this time 'very similar' (nie, napisz 'in a similar way'). After 'the' (niepotr) Christmas Eve, we go to the 'Midnight Mass to the church' (najpierw gdzie a pozniej po co).
As always, I 'spent' (tutaj 'spend') my Christmastime very well.
At the end I can tell you that I 'had' (nie mozesz pisac ze 'had' bo dopiero co szykujesz sie na Christmas...tutaj 'have') a fantastic New Year's Eve.

Poprzerabiaj te przedimki jeszcze (a, an, the)

Bardzo Ci dziękuję!

I have to clean my room and help my mum with the cooking.
Christmas Eve is the most family day throughout a year.
At first we give best wishes (cos tu brak - 'do') one another. - chodziło o: to one another ?
Everyone should taste all (tu brakuje 2 slowa) dishes. - nie jestem pewien: all from the dishes ?
Later, we unpack the presents.

Czy teraz jest dobrze?