Thanks all so far! I will make product expansion part of my 2015 business plan, there are already more card sets in the works, but not sure if I can pull it together before the holidays.
Jamie, thank you for your photography thoughts. This is actually my 3rd approach. Which only means that each time I re-do they technically are getting better? My challenge is definitely showing my images on the cards as close up as possible. Because I have the inside image, that is important to me and I would think any potential buyer to want to see that with my wordage inside. Yes, envelopes are included, it's listed in my line items in my description. Maybe, I need to mention it sooner.
Thanks again everyone and please keep your thoughts coming! This really helps me!