Theory:

An acrostic poem is where the first letter of each word of each line spell out a phrase or a word. The word can be a name, place, animal, thing, phrase etc. Children usually try acrostic poems with names of their friends.
Important!
An acrostic poem is a simple, fun type of poetry. The rules are simple, and there are no poetic constraints.
Rules of acrostic poems:
  1. The first letter of each line should spell the word.
  2. The first letter of each line is capitalized; this makes it easier to read the word vertically down.
  3. No need of rhyme; rhyming words are not required in this type of poem.
  4. Length of the lines can be small or long (even one-word sentence is allowed).
  5. It is good to know a list of describing words to write the poem well.
Example:
Acrostic poem about FUN: 
  
Friends get together for
Unlimited fun, every
Now and then!
Some more acrostic poems:
  
1. ICE CREAM:
  
Inviting and
Chill,
Enjoyably
Crunchy,
Relished
Even with
Almonds, it is
Mmmmm.
  
2. CLASSROOM:
 
Calm and
Lovely room, filled with
Active and
Smart
Students, who are
Respectful and
Outstanding,
Obedient to teachers; hopefully
Manageable by teachers!