Retrofit normal TV to look like an Art TV

My wife wants an art/canvas TV for our living room but doesn't want to spend $ on a new tv since ours if pretty new. So I'm trying to mess with the settings and other little mods to make it appear closer to the actual art TVs out there. I'm buying a wall mounted electric fireplace for her for Christmas so I want to put it all together with the tv modifications!

I'm thinking of building a wood picture frame around it to help when displaying art. I've read a bit about what helps with the actual art TVs look more realistic like turning down brightness. But I would love to know if anyone else has tried this or has ideas on the settings that would give it the best art-like display?

Thanks!