What is an acrosstic for the name Jamie?

An acrostic is a poem where the first letter of each Word (or line) spells out a Word or phrase.

So an acrostic for the name Jamie would simply be a poem where the first line begins with "J", the second line begins with "A", etc.

Often these poems are written to describe the Word/phrase being spelled out.

For example,

Joyful

Ambitious

Mysterious

Independent

Exciting