Jackie Kay messes with my mind

Hi all trying to write a criticism on Jackie Kay`s Old Tongue. What are the formal features of the poem such as rhythm and metre, stanza form and rhyme? Alongside the technique eg symbolism, imagery metaphor etc?

Any ideas would be welcome.

`Old Tongue’ from Life Mask (Bloodaxe, 2005)

When I was eight, I was forced south.
Not long after, when I opened
my mouth, a strange thing happened.
I lost my Scottish accent.
Words fell off my tongue:
Eedyit, dreich, wabbit, crabbit
Strummer, teuchter, heidbanger,
So you are, so am ur, see you, see ma ma,
Shut yer geggie or I’ll gie you the malkie!

My own vowels start to stretch like my bones
And I turn my back on Scotland.
Words disappeared like the dead of the night,
New words marched in: ghastly, awful,
Quite dreadful, scones said like stones.
Pokey hats into ice-cream cones.
Oh where did all my words go –
my old words, my lost words?
Did you ever feel sad when you lost a word,
did you ever try to call it back
Like calling in the sea?
If I could have found my words wandering,
I swear I would have taken them in,
Swallowed them whole, knocked them back.

Out in the English soil, my old words
buried themselves. It made my mother’s blood boil
I cried one day with the wrong sound in my mouth;
I wanted them back; I wanted my old accent back,
my old tongue. My dour soor Scottish tongue.
Sing-songy. I wanted to gie it laldie.

Jackie Kay