Advice before editing this pre-1700 McKenna profile? Why cant I add a photo to this entry?

Question

I have information to contribute to the profile of Nugent McKenna. This is what I can add: I can add a photo of the grave with the inscription recorded in the entry

These are the sources I am using:

• Church records for Haggardstown church and a grave inscription in Dromin Cemetery co. Louth.

Should I contact one of the pre-1700 projects or know about any style guidelines before proceeding? Thank you!