I love embellishments. I have a Viking and the dealer offered a class a couple years ago called 'playing with your feet'. You were supposed to bring whatever trims and feet you had at home, and they let you use all the feet in the store. What fun! You can get a lot of bang for the buck just using a couching foot, which is available for most machines. You can couch braid, trim, novelty yarns ribbon etc. You actually can just use a zigzag foot, but a couching foot has a groove on the bottom to handle the extra bulk. You can use an unobtrusive thread and let the couched material be the star, or use a decorative thread & stitch and enhance it. Most machines also have a pintuck foot available. Another foot I LOVE is my cording foot. Not sure if this would be available for your machine. Here's a pic of the one I have.
http://www.thecolorfulworldofsewing....na-Viking.html. It has holes in it, you thread multiple thin cords thru the holes and use a decorative stitch to hold them down. The only foot I didn't like is the beading foot. never could get the beads to thread correctly. Just attach them by hand.
The only time that a Craftsy class is available for a limited time is when they have the specials where you pay a single price and can take any class you want, but they are only available for that month. If you get a class on sale, you have full access for ever.