The Graphics Fairy is a resource for Home Decorators, Graphics Designers and Crafters. Find over 6,000 FREE Vintage images, Illustrations, Vintage Pictures, Stock Images, Antique Graphics, Clip Art, Vintage Photos, and Printable Art, to MAKE craft projects, collage, Mixed Media, Junk Journals, DIY, scrapbooking, etc! DIY and Craft Tutorials, and Home Decorating Ideas are offered as well. Daily vintage image downloads since 2007. Most are Jpegs, or PDFs, but there are some Vectors as well. As far as I know these are all Royalty Free Images that are in the Public Domain in the US. However I cannot guarantee that. Please see my Faq page to find info on copyright laws in your country.
There is an increasing number of online craft marketplaces, such as Etsy, Amazon's Handmade, Artfire, and many other specialist sites. Selling online is a viable proposition for anyone with access to the internet. No technical skills are required to set up an online store within these online handmade marketplaces. Starting a store on Etsy is relatively quick and easy to do. But, you will need to work hard at taking top-notch photos of your cards, crafting superb product descriptions, and learning about search engine optimization and keywords to really get your online business off the ground. Don't worry if this sounds daunting, the Etsy seller's handbook is a fabulous source of information and will help you get started.