Oh so pretty. I love it!!!

It looks like we are looking out on a forest, great quilt!

I would "straight" stitch or SITD for the window frames, then outline the trees. Meandering or an all over design would take way from your "windows".

That is very nice

Lovely work. It looks so professional.

Love your quilt. I would do some free motion quilting -- wood design or something like that. It's going to be lovely.

Sid window frames and follow the grain in the trees and leaves to make them stand out, jmho.

Beautiful attic windows quilt. I'm not sure what to suggest for quilting, so I won't suggest anything, sorry.

Very pretty wall hanging. Really like this type of attic windows.

I really like it and have been meaning to make an attic windows quilt myself. Is the background a panel or did you create it?
I'd keep the quilting simple. You don't want to distract anyone from the quilt itself.