The good - it's super easy and cheap and great for prototyping.
The bad - the transfer material is actually quite thick and opaque. So not so good on white.
The ugly - none. Well maybe one - it does look kinda cheap.
Experiment 2: Leather obi belt
Leather Obi belt - Sheep's leather with Japanese patterned fabric
The good - I'm getting there with sewing leather, it's definitely wearable and I've got plenty of ideas of how to improve for my next attempt.
The bad - The sewing isn't really consistent and the leather didn't really glide over the machine
The ugly - Luckily the inside of it can't be seen when wearing it. ;)
If you want to have a go at sewing leather, it can be done with your normal machine if the leather is soft enough. I also found this guide helpful. If you have any tips on sewing leather, I would love to hear it!