If you need to attach a picture to a signed waiver, there are 2 ways to approach.
Open the signed waiver from the "Recently Signed", you could upload or capture to attach a picture on your computer.
Open the signed waiver from the "Recently Signed", you could able to use your mobile app to scan the QRcode to attach the picture to this signed waiver. Using your WaiverForever app and click "more" on the menu bar -- click "scan to attach pictures." -- scan the QRcode to upload any pictures through the mobile device.