If you are new to machine embroidery, I just want to take a minute to let you know that no matter what make and model embroidery machine you have, it can sew out this project as long as you have a 4×4 hoop and you download the correct design format for your machine (more on design formats later).
Machine Embroidery Tutorial for Square In-the-Hoop Coasters
Supplies: Self-adhesive wash-away stabilizer -or- Self-adhesive tear away stabilizer, 1 can of temporary spray adhesive, for all coaster design options, you will need two 5″x5″ fabric remnants per coaster, one for coaster front and one for coaster back, for all coaster design options, you will need one 5″x5″ scrap of cotton, low-loft batting for the applique option, you will need a 4″x4″ scrap of fabric for the diamond, 1 spool of embroidery thread (be sure to use matching embroidery thread in your bobbin), an embroidery machine with at least a 4x4 hoop