I would like software designed whereby a user could simply type in the design stitch by stitch and have the actual pattern show up on the screen for printing, both while doing the pattern, as well as printing the finished pattern. It would need to actually form the pattern on the screen as you type. This would need to be designed so the user could go in and make changes to the pattern.
This must be compatible with most common operating systems including Vista, and would need to be simple to use since a large portion of the users will be elderly.
I would like to have a help section put into it that I could answer FAQ, or at the very least, a link to a help desk I will build on my website. This needs a color pallet so they can put color to the pattern.
To sum it up, my wife would like to make printed patterns as well as step by step patterns for sale, and would like to sell the software, so you have a general idea of what she needs. She could provide you with the necessary stitches and directions you will probably need to code in.