you will need to write a letter in English and also read a letter written in English. You will need to check Discord regularly in case your Santa contacted you to answer promptly.
Viewing post in Can I participate even if I don't speak English well?
We expect games with text to be made in English (though others are fine if both participants share a language, and no text is fine too!), but there aren’t any strong requirements on proficiency :) We’ve had lots of non-native English speakers participate in the past, from various backgrounds and language levels. And your English is very good!