Oh, forgot to mention, adding flower boxes under shorter windows to visually lenghten.

I don’t see how it’s physically possible to add gables that have a greater pitch than your existing roof

Thanks Beverly. Gables will match the height of our roof. Note where the porch was drawn onto the architectural drawing of our current home.

Your mockup doesn't seem to show white between each casement window. Is that what you intend? This isn't a Marvin window so the naming convention might be slightly different, but are you saying you want the mullion (in this diagram) and the frame to be white?

Yes, you are correct. Thank you

The mock-up may be difficult to see It is an old beige window where I painted only the sashes (the area touching the glass) in an effort to add ”delicate” vs. ”bold” definition. I can order separate, narrower windows and have my carpenter add framing, but wondered if I might accomplish the same look with factory-built triple windows in this two-tone color arrangement.

Are these Marvin custom windows or are you using Marvin's stock windows? I used Marvin's stock windows as my replacements (used to be called their Integrity line, I think it's something else now) and I found the installers liked the individual windows much better than getting them attached to each other at the factory. Gave them more opportunity to fit and equally distribute the space around the windows in the existing opening. If they are attached at the factory, the space will all be on each side, no opportunity for space between the windows. Does your carpenter/installer have a preference for how to achieve what you want? If these are Marvin's custom line, you won't have that issue.