Have I planted these two trees too close together?

See below, I've drawn arrows to two Japanese Maples - an Osakazuki on the left and an Atropropurerum on the right.
I originally wanted the Osakazuki to grow biggest in that space to replace another 8-10' spiky tree thing we had there before, but recently moved the Atropropureum there.
I'd be happy to prune a bit to keep the Atro as a lower item and to grow away from the Osakazuki but just wondering what other folk think. I'm not going for a specimen look here, more of a woodland area as it's north-facing.

I originally wanted the Osakazuki to grow biggest in that space to replace another 8-10' spiky tree thing we had there before, but recently moved the Atropropureum there.
I'd be happy to prune a bit to keep the Atro as a lower item and to grow away from the Osakazuki but just wondering what other folk think. I'm not going for a specimen look here, more of a woodland area as it's north-facing.

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for the fag ends of the aristocracy.
There is a magnolia galaxy which forms a triangle with the two Acers ... but other than that it's just the tree fern which won't really grow much ...
I would certainly remove one of the Acers.
for the fag ends of the aristocracy.
My goal here isn’t to achieve shade more to accommodate, really.
My solution is going to be to prune / train the Atroptoureum on the right to stay no more than about 4’ high and wide - and let the single stemmed Osakazuki grow unchecked.
At this stage, determine which of those trees may have the biggest spread from medium to max heights and see if your plans will play out as you are imagining. That is the art of gardening and creating spaces.
Visual appeal of trees with consideration of their heights and spreads, foliage colour transformation during a given season, blooms and visibility are great factors when planting them including which one thrives best under sun or in dappled shade. Noticed of some shrubs underneath the trees too ... those are fun too. There are so many choices for colourful shrubs (foliage and blooms) that grow in dappled shades of trees.
Have fun with your gardening ...