Adding an attachment to a web request

Hi all,

I am currently working on an automation that once a specific form is submitted, a web request is sent that opens a ticket in another project. What I want is to add that form submission - the attachment, to that ticket in the other project. So the workflow is as below:

Ticket is created in Project A
Form is filled by Line Manager in Project A
Line Manager submits the form in Project A (clicks Submit)
Web request is created and ticket opens in Project B
The attachment submitted is included in the attachments of Project B