The Impressions magazine that we get as a Stampin' Up! demonstrator has a rather cute corner catcher (or bookmark!) and I thought I'd have a go myself at making one. I've done instructions so you can have a play as well...
I have used a 4" piece of square cardstock as the base for mine. Mark it up at 2" on the top and then the left and right sides. Score and fold.
Next, trim a piece of DSP measuring 2" x 4" and trim it down as this gets stuck onto the back.
Turn over and then decorate the front. I drew around a piece of DSP and then trimmed it down that way.
And there you go, one corner catcher. Have fun! {You might want it a bit smaller so you might find making it a 3" square is better but I wanted mine big!}