So after working so diligently I have finally completed the skull coasters and pattern.
Now my embroidery skills were not that great at the beginning, but have improved drastically. I did have to remake 2 coasters and pick out alot of stitches.
I ended up using yarn for the embroidery. It just looked better on the crocheted coasters. And because I did the embroidery I had to put interfacing on the back and then a fabric backing. It actually was quite a pain, but the end result is fantastic!
As you can see fantastic. I have posted the pattern on my pages if interested.