In this step we'll add highlights and shading to the rest of the blue house trim.
Load the OUTLINE selection from alpha channel and paint the outlines on the porch posts. Lightest blue on left and darkest blue on right. Hide marquee. I think this highlight/shadow needs to be emphasized a little more. Let's paint a 2nd light line and a 2nd dark line next to the outlines. Refer to closeup image. De-select marquee when done.
Paint OUTLINE of blue roof trim the darkest shade of blue from swatch. Don't change the black outline around the brown roof shingles, just the outline that's between blue and white areas.
Let's give the roof trim some dimension using the same highlight and shadow used on porch posts.
With the darkest shade of blue, draw a 2 pixel line (point-to-point) inside the roof trim adjacent to the dark blue outline.
Repeat for all 3 gables.
With the lightest blue, draw a straight, but angled, line up the center of the blue trim tucked in next to the dark line you just drew. Change brush size back to 1 pixel. As you get to lower corner returns of roof trim, refer to closeup for placement of highlights and shading.
Repeat for all gables.
Note: We've gone thru a lot of steps and Paint Shop Pro has recorded every action. If Paint Shop Pro starts running a little sluggish, free up some memory by clearing the clipboard and emptying the command history. Just remember, you can no longer UNDO any actions that are cleared. View > Palettes > History On the History palette, click Empty Command History. In PSP X, you can selectively UNDO only some of the command history, if you prefer (option not available for older versions).