Objective: Combine the intermediate skills you've built into one complete, sellable item by planning the build order and finishing it to retail standard.
At this point you can sew straight and zigzag seams, finish raw edges, insert a simple zipper or elastic casing, and make buttonholes on the MC6650. A real-world project is just those skills chained in the right order. The key shift from practice to product is three things: fabric choice, build sequence, and finish. For a home business, pick medium-weight cottons, canvas, or denim — they are forgiving, press crisply, and photograph well. Build sequence matters because every garment or bag has steps that must happen before others: hem or topstitch any piece that becomes hard to reach once it's enclosed, install zippers or pockets while the panel is still flat, then join side seams, then finish edges, then attach handles or closures last. Batching speeds you up: on the MC6650, set the needle-down button and the automatic thread cutter, then sew all the same operation across multiple cut pieces before changing settings (e.g., topstitch all four pocket tops, then switch to seam construction). Finishing is what separates homemade from handmade-for-sale: finish every interior seam with a zigzag or the overcast foot, press after every seam, and add even topstitching 1/8" from folded edges using the edge-guide or a guide line on the needle plate. Consistent 1/4" or 3/8" seam allowances throughout keep pieces matching. Before you sell, inspect: no skipped stitches, locked thread tails, square corners, and symmetric topstitching.
Example: Making a lined zip pouch to sell: 1) Cut two outer panels and two lining panels (8x6"). 2) While flat, install the zipper between outer and lining at the top edge — sew one side, press, topstitch 1/8" along the zipper tape on the MC6650 with needle-down engaged. 3) Repeat for the second side so the zipper is sandwiched. 4) Open the zipper halfway (so you can turn it later), then sew outer-to-outer and lining-to-lining around, leaving a 2" turning gap in the lining bottom. 5) Zigzag-finish those seam allowances, clip corners. 6) Turn right-side out through the gap, press, and edge-stitch the lining gap closed. Result: a fully-lined, clean-finished pouch in about 25 minutes — a classic $18-25 craft-fair item.
Try it: Plan and sew one lined zip pouch (or sketch the written build order if you only have 5 minutes). Write the full step sequence first, numbering which steps happen while pieces are flat versus after assembly. Engage needle-down and the thread cutter, batch your topstitching, and check your finished pouch against four quality points: even 1/8" topstitching, finished interior seams, square corners, and a smoothly operating zipper.