Crown moulding added beneath a custom-cut enlarged window sill.
Window sill idea for replacement windows
Medium Kitchen IdeasTable of Contents for the Book Ultimate Guide to Building Decks
Make a farmhouse window - add window trim to beef up a plain window with no miter cuts in sight!
DIY Window Trim - The Easy Way Bless'er House - I want to trim all the windows in our entire house like this!
This sill extension can be supported underneath by quarter round.
Grow mini trees on your window sill(Bottle Green Interior)