Thank You Card Help What Should I Write In A Thank You Card For A Substantial Monetary Birthday Gift?

What should I write in a thank you card for a substantial monetary birthday gift? - thank you card help

My aunt has a nice fat check to me (on my birthday, in his words, me) sat for the future and career and I have a long thank-you card. However, I like to express my gratitude to the most confused, I'm still a little stupid. All proposals for the tickets?