I've spent some time looking into the poem further like how old was Jenny when she wrote (She was 29) and how as a middle age woman, I tried to interpret how she would see herself when she's old. In my interpretation, I see my character to be a stylish old granny (around the age of 60) but youthful at heart. So this is what I've got so far as how the animatics would go.
I don't quite like the opening shot but I am thinking if should have the start and the end of the whole animation as a loop.
In terms of the character design, I have narrowed it two types of women:
1) Short and chubby
2) Tall and awkward