Combine sharepoint list items and file (in order for new entry) into single file

[fishbicki]

Hello,

I have 2 SharePoint lists - "Visitors" and "Instructions", also 1 folder "Signatures".

In my app:

1. Name is entered, and that creates a new value to "Visitors".

2. Text is shown from "Instructions" (we can say it's static).

3. Making a Signature in PenInput generates a new *.jpg in "Signatures"

What is the way to combine all these elements in order for present visitor (Instructions;Name;Signature) in a single standalone file ? 

All formats all welcome. Printable SharePoint list/site is also welcome.

*Or grab url to new singature image and then store it in "Visitors" Image column + grab text from "Instructions" and add to "Visitors" AgreedContent column ?

** In other words: How to update new created SharePoint list item with new created Sharepoint file url ?