He must have just started...and it looks like he's surprised by the weather, so that's why he's dressed inappropriately. Heh heh...as a terrier, he almost doesn't need a brush, eh? :D
I cannot tell that this was a rushed coloring job - it looks as beautifully rendered as your work always does.

I am a chimbley, a chimbley sweep
No bed to lie, no shoes to hold my feet
Upon the rooftops in dead of night
You'll hear me cry, I'll shake you from your sleep

To hear me weep
"Your day will come indeed
For I am a poor and a wretched boy
A chimbley, chimbley sweep."

I am an orphan, an orphan boy
I've known no love, I've seen no mother's joy
A dirty doorstep my cradle laid
My fortune's made, I'll shake you from your sleep

To hear me weep
"Your day will come indeed
For I am a poor and a wretched boy
A chimbley, chimbley sweep."

"O lonely urchin!" the widow cried,
"I've not been swept since the day my husband died."
Her cheeks are blushing, her legs laid bare
And shipwrecked there, I'll shake you from your sleep

To hear me weep
"Your day will come indeed
For I am a poor and a wretched boy
A chimbley, chimbley sweep."

For I am a poor and a wretched boy
A chimbley, chimbley sweep