Some comments about the sewing route now that I've gotten past the final lectures. The level of entry is way too high and the profitability is questionable if not outright a losing proprosition.
MC is saddled with a $3250 semester tuition. They then need what is basically another $1000 to get set up with a sewing machine, patterns, thread and materials at the store in the mall. Then they get home to try to start sewing and find out that they lack the skills to sew anything. It isn't until almost at the midterm week with a skill level around 100 or so that they can start sewing just basic gloves.
Once they are able to craft anything, it appears they can't wear the fruits of their labor. They can't even sell it anywhere short of creating it to fulfill a job request. The problem with the job requests is that they don't take into account the mc's skill level. As an example, my playthrough's first job request that I could attempt to accept was for two pair of long latex gloves and 2 or three latex dresses that had a deadline of 4 days. This, in spite of the fact, that while I was at the point that mc could craft the gloves, they lacked the skill for the dresses. They were still able to only craft up to a jean skirt.
The payoff for this work was something like $550, which meant at least a days work for the gloves and an unknown time for the dresses since they hadn't unlocked yet. By comparison, mc was at over 500 followers at this point as a camgirl and was pulling in well over $1000 for a few hours of work. It's unclear how much material is needed for each item, because that's not listed anywhere. So MC buys one of each, gets home, and finds out they need a lot more. Like those buy x 10 links more. So he's shelling out several hundred bucks for material, spending 4 days or so of labor and MAYBE making a few bucks if he meets the deadline.