'I cannot stop' would be better at the end, surely? Also the 'like' in line 5 sounds as if it's a bit of, like, conversation... And how long should my list be?
I pause, I falter, I hesitate
I can though, like this, interrrupt
Quite politely and like this,
End lines of poetry
And enjoy, best of all, to help
With lists like shopping, birthday, things to do,
I think I'll change the second line to something stronger: 'But I can, like this...' Should I avoid the two uses of 'like this' ? I could change the second one to 'as here' but I'm not sure it's as clear.