1) cut your DP to size 6x6. I was able to use up a lot of my scraps and score each side at 1"
I adhered a tiny piece of double sided tape in the center, just to hold the coaster in place while i was wrapping the paper around the coaster. Fold corners first in, this gives you rounded corners. You can wrap it as you would wrap a present - that will give you pointed corners. Adhere with double sided tape.
finish all 4 sides, so it will look like this:
Next you want to make the inside were you can attach the post-it note. Cut a piece of matching CS to size 7 15/16" by 3 3/4". Now if you want it exactly, you will need to score at 3 13/16 flip the CS and score again at 3 13/16. I wanted mine with more hight for the ticker post-it block and for a pen so i scored mine at 3 3/4. Just try what works best for you and with the kind of pen you might want to add.