I don't have any pictures of the new place and I am not at home today, but in a few days I will make 1-2 photo for you.The ceiling is not an option for me because it's made of concrete. So I still use the RP-140SA's, easy to hang them on the walls and they are tilted downwards by default... so looking to the MLP or just a bit above.
If you want only 2 Atmos speakers, put them as close as you can to the MLP. Almost above, just a bit in front. Do not put them above the fronts.
You can achieve the best Atmos experience with ceiling speakers, so if you can - even it's more expensive - do that!
But keep in mind, Dolby Atmos uses in ceiling overhead speakers (~45-60°), while DTS:X uses Front/Rear HEIGHT speakers (30-45°).