I wouldn't worry about mastering any fancy quilting designs cuz even if you're off abit no one will know but you. I did stitch in the ditch on a log cabin placemat just for practice and you know what, every stitch that wasn't even on the seam line stuck out like a sore thumb. I hope I didn't scare you. If you do stitch in the ditch go nice and slow to start til you get the feel of it.