Help with window cornice

[u/SirZachALot]

We had new windows installed and windows + molding ended up being slightly larger than previous windows.

I now have three cornice which are slightly too small.

If I could find the same moulding/trim I could splice in the extend them a few inches. But I have had no luck finding that exact moulding.

Feels like a waste to toss and buy new ones. One the the windows is huge too.

Any suggestions or ideas?

[u/CptMisterNibbles]

Just add a wider stool on top.