Testing Artifacts on Jira Issues - what is best practice for where to post and store these?

[pmarvil]

Hi all, 

I'm interested in learning best practices for making QA Testing Artifacts immediately visible with dates that they're added, with who is adding the Testing Artifact, with a description. 

We currently have QA Testing subtasks on our Issues.  We have a Test Results custom field.  Some of our testers are adding QA Testing Artifacts as a Comment on the Issue (yields the most benefit as it shows who, what, when).  Some testers are adding attachments to the QA Testing Sub-task.  Some testers are adding pictures or text to the custom Test Results field we have in the Issue (can't tell who or when with this).  

What is best practice?  

Thank you.