Love the last one, with big frame in middle, more balanced, you maybe able to have a bit more distance between them

Thanks Irene! I can add more on after that way too.

Third one gets my vote too. Or the third style, but with the vertical placement switched on one side so larger over smaller. I wonder if the outer edges of the frames of the two on each side should align vertically , rather than have each upper picture placed symmetrically above the one below. This would create a better sense of a complete virtual ‘frame’ around the collection. More of a salon hang.

Hmm like your ideas! So not place the smaller frames centre with the larger one that will be beneath it rather align the outer vertical edges!

I would align them like you have, just a bit more of a gap between them horizontally if that makes sense

Use cut out paper to the size of the pictures and blue tack them up. Contradicting myself a bit: certificates perhaps are more individually viewed, and the total look may not be ideally viewed as a whole. Where perhaps art can be grouped more easily.

An update on where I got to with placement of my frames. Thank you all for your help it was invaluable! I’m pretty happy with how it turned out! Not perfect but love it!!

Second pic..

Ps ... had to add my daughters art creation on our angled wall. Love her little art work 😍

please change that location, I may not know what you have in mind regarding views/iconic placement or monumental expression.