Well, if you're following along with the Craftsy class and it's going pretty well, you should probably be able to do the collar if you take your time at it. I did little tests along the way. For example, using a scrap of the same knit fabric, I tested out the piping before doing it on the cut collar pieces. I also did more basting than the pattern calls for, to stabilize the collar pieces to themselves and to each other. Oh, and be sure to mark center front carefully on the collar. You will use that to figure out how much and where to overlap -- though there is a little wiggle room. Good luck!