How to dress a window that opens inwards?

[thelegohooverer]

I’ve replaced one bedroom window, but I didn’t realise it would open inwards. Before we had a blackout roller blind and curtains. The roller blind won’t fit now.

The room gets very strong morning sunlight.

On the same gable, the next bedroom has a blind and curtain. I’d prefer the house to look uniform from outside but my ds has autism and changing his window dressing isn’t an option.

Any ideas?

Roman or roller blind on the outside of the window frame maybe? Or perfect fit blinds?

I'm just replacing all mine to open outwards. The previous owner had vertical blinds set forward so the window ledge is not usable.

I hadn’t thought of perfect fit blinds. Thank you!