I used teal card measuring 41/4" x 11" and scored this at 51/2" and 23/4"
Use a die shape of your choice. I think this set is by Spellbinders but I'm not 100% certain
Place the die on your card front and secure
Only place your cutting mat so that it will die cut half on the left side. I placed mine just below the centre points
You will now see your score line but, if you use a detailed embossing folder you then won't be able to see it
I used a Spellbinders EL-021 and embossed using the inside design
Hold your card at the spine then gently 'flip' the other end to enable the 'flap' to show on the inside
I used the next 2 smaller dies, from the same set, for the front panels and used white card and a kind of sage green paper
The stamp set is by Creative Expressions, 'Amazing Sentiments' and I used StazOn in Jet Black for the inking
I positioned my verse behind the 'flip flap' so that you couldn't see it until the card was opened
I hope you want to give this a try!