Here's a draft letter you can adapt for your future host family. Remember to personalize it with your experiences and what you're looking for in a family.

Dear Future Host Family,

Hello from Costa Rica! My name is Génesis, and I'm incredibly excited about the possibility of becoming your au pair. I've been dreaming of this experience for a long time, and as I've learned about the English language that has been within my reach, I know this is where I'd love to grow and help out.

Let me tell you a little about myself. I'm 24 years old. At home, I'm known for my patience, energy. I've had the opportunity to look after my younger cousins, volunteer at a daycare, tutor elementary school children]. These experiences have taught me the importance of clear communication, flexibility.

I'm a very responsible, organized, adaptable person. I enjoy cooking, reading, learning languages.

I'm looking for a family that is open to sharing their culture, values and communication. I'm eager to immerse myself in your daily life, learn about your traditions, and of course, care for and have fun with your children. I'm willing to help with preparing meals, taking children to school or their activities, helping with homework, and playing with them at the park.

I know this is an important decision for you, and I want to assure you that I take the responsibility of caring for your children very seriously. I'm committed to being a positive and supportive part of your family.

Thank you in advance for your time and consideration. I hope to have the opportunity to chat soon and get to know you better!

Sincerely,

Génesis.