The letter to my teacher.

I want to write about my vacation to you. For my/During my last vacation, my brothers and I went to Zipaquira because it was my dads birthday and he was sixty years old (or did he turn 60?)​. It was a very fun day because we never got together (like this) before. I remember we went to Bogotá and we went to the cinema/the movies but the movie was very bad. We also went to the Termaneles in Tabio - Cundinamarca but I didnt liked it beacuse the site was very small, very expensive and there were many people. Then we went to look for something to eat and found a very good restaurant. After that we went to home. The next day we went to Neusa lake and we walked around the lake. This lake is awesome and beautiful but I was very sad because the forest was cut. The next day everybody went to cook/make corn natilla and buñuelos and it was very difficult because of the cold and rain. This was a very funny weekend.
For my next vacation, my girlfriend and I will go to San Blas Islands in Panama, the beach there is very amazing because the sea it is crystalline.

Notes:

Funny means something that makes you laugh.
Fun is something that you enjoyed.
In English the adjective goes before the noun.
Pay attention to the tenses! :)

Hope this helps!