For me, there's always " staples " that sell year after year, and there are some fads that come and go year after year. What is your best seller for two years running, you might not can give away to the same people the next season. FO's are kinda like food to me , in the respect that it seems in different areas of the country, totally different things sell and don't. Here in the south, we love Grits......... but most Yanks go EWWWW , yet we wouldn't dream of eating Creme of Wheat !!! I can't sell bakery scents in Tn for some reason, but I can't sell anything BUT bakery scents down here it seems ( which upsets me because I am not a huge fan of them ) For a signature scent, like stated above, figure out what sells the most in your area, and then take that and either go with it as is, or mix it up a little with something else and see how that does. What YOU want as a signature scent, might not be what THEY want as one.... Ahhhh the joy of trying to please everyone !