Trouble interpreting Budapest by billy Collins poem?

Question

I have paraphrase, connotation and written a theme. Except I'm having trouble identifying the attitude and shift.

My pen moves along the page

like the snout of a strange animal

shaped like a human arm

and dressed in the sleeve of a loose green sweater

I watch it sniffing the paper ceaselessly

intent as any forager that has nothing on its mind

but the grubs and insects

that will allow it to live another day

It wants only to be here tomorrow

dressed, perhaps, in the sleeve of a plaid shirt

nose pressed against the page

writing a few more dutyful lines

while I gaze out the window

and imagine Budapest

or some other city

where I have never been

Answer 1

well, first don't beat up the poem looking for hidden meaning, as collins advises against.

the narrator's writing, but the focus is on what's going on in his mind (so the title is Budapest, the thought of it)

see how the writers sleeve becomes  a grub sniffing animal, like the arm is disattached from the rest of him, as his thoughts go to something that is not in memory.

i like it

that's all i know

write anything