Sketching is too much sketch

The contrast of blond and fair
And everything else black
(Well not the shoes.)
Is interesting, but
Hard to sketch, plus
She's too close, the creep
Of looking (staring) from
Three seats away is more
Than I can endure,
So my sketch moves to
Poetry, to my words and
Then, contrasting again,
The feminine looking girl
Cracks her knuckles and
My brain leaps for joy upon
Exposure to my assumptions.