How to Fix Drafty Storm Double Door?

I am looking to trim out a casement window on a mudroom remodel for a house around 100 years old. I have a thumbnail pic (from where I'm not sure...) that shows a basic design of more-or-less what I want to do. Since the mudroom has no real eve, I want to create a decorative overhang built into the trim above it. Essentially this would be a shed style roof that protrudes out around 6-10 inches from the wall (made of a roofed piece 1 x __) and is supported by two brackets nailed to the side trim casings. I am not sure what this would be called, but I've had little luck scouring the internet using terms like cornice, awning or overhang. So, what is this thing, or is it simply some modification of trimwork. I've seen somewhat similar work on a few older houses here in Louisville, KY, but nothing identical to the small pic I have. I was hoping to figure out what its called to get better design ideas for details of it.... Any help would be much appreciated. :confused:

Hello all, Searched the forums and didn't seem to find a lot of info on retrofit vs. new construction vinyl replacement windows on a stucco home. From what I've been able to glean off the net, new construction is more costly, takes longer. But generally leaves you with a larger window area and w/out the large retrofit flange on the outside. I've also seen botch jobs in my neighborhood where the stucco patch/repair is very noticeable and does not match. Retrofit is cheaper and faster. But reduces the window size and has the large flange on the outside. I've heard mixed reports on leaking such that either will if not done properly, but most seem to suggest that new construction is better in this area. The few showrooms we visited had the salespersons pushing new construction as the way to go, although I have a feeling they are hungry for labor/installation, especially in this economic environment, and that might influence their advice I'm leaning towards retrofit on most windows as they are already quite large to begin with, so losing the 1-2" around the outside window wouldn't be so bad. And the fact that I've seen some new construction jobs that look bad. Why risk it? However I have 2 windows that are not so large on the 2nd floor bedrooms where I really don't want to lose window area, so here I'm leaning towards new construction. Any suggestions? I also have a question on outside trim, and how that might affect my decision on retrofit/new construction. At least one window has a wood trim around it, perhaps a 1"x3" or 1"x4". I saw a milgard video where they scored and removed the outside flange of a retrofit to fit inside the trim. Seemed a little strange to me as I figure the flange is there for a reason, such as sealing and stability. Would the other option be to remove the existing trim and then put in the retrofit? Finally, can I add outside wood trim to a retrofit on top of the flange? I assume I'd have to "channel" the wood trim to fit over the retrofit flange? Thanks a lot, appreciate your input!