What do you feel is the problem with them?

There are big gaps to the left and right

Perhaps you can take some photos from a little further away as well. It doesn’t really show clearly which is the original frame and which is the frame for the shutters.

This is another room and the left and righthand side of one window.

and this is the other window in the same room where you can see that there is much less of a gap betweem the shutter box amd the window frame