My 2nd LoCon using Kohya LoRA Dreambooth https://github.com/linaqruf/kohya-trainer method.
Borders and being stuck inside things are pretty common, due to the poor quality images I trained it with (it particularly liked putting him INSIDE a microwave when using "microwave" prompt). He also has a bad habit of disappearing completely, but I think I know what I did wrong.
I plan on fixing all this sometime in the future using higher quality images and I'll hopefully gain more knowledge on how to make it better by then. For now it's good enough for me.
Inpaint and batches are your friend. 0.6~1 weight. Euler A. Hires fix.