Objective: Run a repeatable warm-up drill on the Janome MC8200 and measure your own stitch quality so your hands and eyes are ready before you touch resale-grade fabric.
Confidence on the MC8200 comes from short, repeated, deliberate drills rather than from sewing one big project. The goal of a practice session is not to make something keepable but to train three motor habits that every quilt top needs: feeding fabric at a steady speed, keeping a consistent seam allowance against a guide, and pivoting cleanly at corners and curves. The MC8200 gives you specific tools that make practice measurable. Use the needle-up/needle-down button so the needle always stops down for pivots. Set the speed-control slider to about two-thirds so you can run steadily without racing. Watch the stitch-count and the LCD to confirm your settings stay put. For resale quilts, buyers judge straightness and even stitch length, so your practice target is concrete: stitches of consistent length, seams that stay a set distance (typically 1/4 inch using the quilting foot or the seam guide line on the needle plate) from the raw edge, and corners that turn without gaps or bunching. Practicing on scrap muslin or cotton in the same weight as your product fabric keeps the feed and tension honest. End every drill by reading your line of stitching like a buyer would, then write down what you saw so the next session starts from fact, not feeling.
Example: Take two 6-inch squares of scrap cotton. Thread up, set a 2.4 mm straight stitch, slide speed to two-thirds, and engage needle-down. Line the raw edge against the 1/4-inch guide and sew the first edge at a steady pace without stopping. At the corner, stop with the needle down, lift the presser foot, rotate the fabric 90 degrees, lower the foot, and continue. Do all four sides so you return to your start. Then inspect: measure the seam allowance at three points with a ruler. A good result is 1/4 inch within about 1/16 inch everywhere, 10-11 stitches per inch, and square corners with no pulled threads. If the seam drifts wider at the end, you were watching the needle instead of the edge-and-guide.
Try it: Cut four pairs of 6-inch cotton scraps. Sew all four as described (straight sides plus pivots). For each square, measure the seam allowance at the start, middle, and end of one side, count stitches per inch, and note corner quality. Write a three-line log: date, best square, and the one thing to fix next time. Keep the best square taped in a notebook as your baseline.