I've seen "magic" cards before, mostly on youtube, and I wanted to try it. The one thing I haven't liked is that you have to seal the card close and there is no place to write a message. So, I reverse engineered the card and came up with some measurements to have a magic card, and a place to write a note. This was by far the longest amount of time I've spent on the how to's of a card. My measurements changed and my notes are crazy, so I hope what I write here, is what I ended up with in the final project.
I actually started from the card base up this time, measuring as I went along. The card base is Tangerine Tango cardstock, cut in half, making the card base 4.25 x 5.5 inches, side folding. I found a piece of colorful paper in my stash from . I cut the pattern paper 5 x 7 inches, and used a nestabilities die to cut out the window.
For the inside, you need three pieces of paper to make the magic work. First, you need a piece of white card stock and a piece of plastic, I used Stampin Up's window sheet, cut to 2 3/8 x 4 inches. then you need a piece of white cardstock that is 4 x 7 inches, and a piece that is 1/2 4 inches.
I stamped the monsters in Stazon ink on the first white panel and using the stamp a ma jig, on the window sheet, so they lined up perfectly. I colored the monsters on the white panel.
To make the magic, you have to assemble the card just right. Take the 4 x 7 piece and fold it on the 4 inch side about 1/2 inch down and punch an opening with the word window leaving the edges unpunched. That's where you will put the other white panel and window sheet. Stack the window sheet on top of the colored image and punch a hole. I added some green cardstock to re enforce the whole before I added the bakers twine. Punch a half circle in the layers so there is room to grab the twine and pull.
Here comes the fun part. Slip the punched paper between the image sheets so that you cannot see the coloring. Tape the 1/2 inch piece to the bottom of the white image sheet. This acts as a stopper to keep it from coming all the way out. Wrap the pattern paper around the image sheets, centering your image in the window. Adhere the whole assembly to the card front. I used foam tape to make sure the image has room to slide, but it might not be necessary.
Watch this video for better assembly directions. I'm not sure I explained it well enough.
The inside is a simple sentiment from Happiest Birthday Wishes.
Thanks for looking and good luck!