First off, it’s your body, do what you want with it.
Now, I am not a professional by any means in the tattoo community but I personaly would take enough time to evalluate the piece already on your body before attempting to revise it just because you can’t think of anything else. There is a reason you choose that particular piece in the first place, right?
There are many different reasons you may want to add to the tattoo you have but if it feels like you are forcing a fit and you are questionable about it then hold off and see if there are others that would have some different ideas.
My personal view. The tattoo you currently have is a great tattoo with a specific meaning with the intentions of honoring a certain individual(s). I would leave it and start fresh with something else.
If the cross is something you would like to have then maybe it could be placed somewhere else to acknowledge it’s level of importance to you.
Unless the cross has a specific reason for being with the tattoo you already have, I would get with a tattoo artist and discuss other options for an idea you would greatly apprieciate regarless of what anyone thinks on a tattoo forum:)
Haj
