I realize this reply is to an older post, but I've just recently joined here.
Rob showed what terrific work he did on the Victory, but wasn't happy with the paper flags, and asked about an alternative.. If I may, let me share what I did to make my Mamoli Constitution as she was, with 15 stars & stripes, in 1812.
1- spray adhesive to regular printing paper, affixing a piece of linen smoothly.
2- cut around edges.
3- easily found images for 15 star flags, long pennant, etc., (from Google), then sized them correctly.
4- printed them out (with just an average Epson), then printed the mirror image.
5- carefully cut out, peeled from paper, then glued together with diluted white glue.
6- sprayed with a fabric stiffener and shaped some folds into them.

(They printed just slightly faded, but really, that's not a problem,since I did all I could to get a weathered look everywhere else)

Hope this may help someone!