This can be typed in the style of a letter here. Pressing Enter or Return will create a new line, not submit the response.
For example:
To my son,
We are so proud of all you've accomplished so far this year! You have put in the work and we believe you can and will do great things. As you are taking the GMAS over the next few days, remember to take your time and show the world what you know. You've got this!
Love you always,
Daddy and Mama