Make a digital sewing pattern from a paper pattern

Hello! I need assistance converting my paper pattern for a poncho with a hood into a digital format and making minor adjustments. The paper pattern works well but requires refinement. Here are the details:

- The matching points do not align precisely; I need adjustments to ensure they match to the millimeter.
- I’d like to make some adjustments such add a popper to the neckline and incorporating tape to secure a cord lock at the back of the hood.
- Once the pattern is digital, I would like to be able to test it against my original by printing it.
- After adjustments, the pattern needs to be graded into 5 sizes.

I have prepared a 2D drawing with some measurement points and have photos of the prototype for reference. The digital pattern must be suitable for garment manufacturing alongside my tech pack.
Thank you.