In this edited design, the holder will stand slightly slanted, and the top of the "holder" is scored so that it can be glued across the top of the "stand".
I originally thought to suggest a pair of glue dots to secure the front part of the "holder" to the folded-to-front sides of the "front". As it turns out, Aleene's Fast Grab Tacky Glue is really good on this project, as long as you use paper clips to clamp the glued areas in place until they dry (about a minute or two).
Both of the above links should forward to my projects on Cricut Design Space.
The unicorn-theme paper design was tiled from Krystsina Kvilis (@peace-art)'s "Magical collection of unicorns II" from Design Bundles.net. (I had intended this particular holder for use at a unicorn-themed event.)
|Front view (it got a bit crushed traveling)|
|Side view: slanted versus upright card holders|
|Oblique view, comparing the two designs|