Before I had Hayden, I did interior design. One of the popular trends then and now, is an "eclectic" style. This is basically mixing all sorts of styles together. It could mean mixing shabby chic with contemporary, traditional with antique... You can do this is scrapping as well. It all comes down to color and scale. You can always mix different types of ribbon or patterns of paper as long as you stay to a certain color theme. Also keep in mind when mixing those pattern papers to keep in mind scale. You will want to keep your patterns in small, medium and then large. Otherwise, everything tends to fight one another. You can see by my layout below that I have mixed all sort of things together. You can see several of my ribbons are totally different. I have rustic twine, elegant silk, fun grosgrain and tatted lace. You wouldn't think that they would go together, but by keeping a consistent theme with my papers, it all works.
Hop on over to the Really Reasonable Ribbon store (HERE). They have a huge selection at great prices. All of my ribbons... came from them. I am sure you will find tons of ribbons to make a layout just like this one.