Improve my jsPDF script

Hello,

I have a jsPDF script that read json data from api and create a PDF with this data using jsPDF library. This already exist.
I need 3 things:
1. Read more data and create more pages.
2. Improve design of jsPDF.
3. User can choose in a form which data to export to pdf, this form also has to be improved accordingly.

This project is only jsPDF, no php.