Here's another one for you guys to try. Beginner Easy. Grab your square ruler and some scraps and lets go.
You'll need to cut 8 squares of whatever fabric you want for the outside. You can also do 4 of two kinds and have a front and back, or just be crazy and cut out 8 completely different ones. Then 4 squares the same size of batting. I chose a spare piece of white 100% cotton.
I used a 6.5" square ruler for my cuts because I wanted nice big coasters that'll drink up all the condensation, which runs rampant here in Florida, even in the AC.
Layer a coaster batting, right side up fabric, wrong side up fabric and pin them in place. Repeat for the other coasters.
Sew around three sides, I used about a 1/4" seam allowance, and trim the edges.
Flip them right side out with the batting in the center and fold over the open end and pin down. Sew along this side making sure you secure all the folded over parts.
Hook up your darning foot, drop your feed dogs (reference your manual if you have no idea what I'm talking about), and free motion sew the three layers together. You want a flat surface so make sure your pretty equal with your top stitching.
and you're done! Go have a drink!