You can use your new treasures any way you want! I know you will enjoy it and whatever you make will be beautiful. Don't necessarily stick to period patterns! There are some pretty new ones that showcase vintage fabrics. For the really big, bold prints try a kaleidoscope. It's amazing how cutting fabric up tones it down. Above all, Have FUN with it. Don't worry about ruining the "value". The value will be in your enjoyment and the wonderful projects you can use it for!