Slightly different version of the card for you today... though they do look very similar!...
With the multicoloured starry Twinkle Twinkle papers on the front... and a Pool Party stamped star on the front... With the very lovely 1/2" Textured Weave Gray Granite Ribbon bow as the closure...Mine is made from A4 card... so here are the standard 10.5cm Small Square card dimensions for you... with a conversion for you US Letter card size users too!
So so simple... a must try!
A4 card 10.5 x 19cm (US 4 1/4" x 7 3/4")
Paper 10 x 3.7cm (x2) (US 4" x 1 1/2" [x2])
Inside Mat 10cm Square (US 4" Square)
Ribbon x 11" (28cm)
1. LANDSCAPE (ie long side along top bar) on trimmer.
2. Score 4.25cm (US 1 3/4") from either side (ie score 4.25cm (US 1 3/4"), turn 180 degrees, score 4.25cm (US 1 3/4"))
3. Bone Fold (the stronger your bone folding the better!!!)
4. Decorate as necessary
Note that I use Tear n Tape for sticking the bow... I find it stronger than using glue dots... and therefore the overall closure stays down better.... Though (with hindsight & thinking out loud) using 2 glue dots would probably work as well!!