2d Blender help

[A middle-aged Femboy]

I'm trying to make a game and am pretty new at blender, so I tried making a 2d rig of a slime to help me learn so I can rig more lewder models later on.
I'm pretty proud of what I have so far, but I want to get rid of the corners which appear when I move the slime, any fixes?
I also want to add some collision and I have no idea what I am doing, so any advice there is really helpful.


View attachment showcase.mp4

 

[Emoon]

Smoother (weight-painting) transitions between your bone influences should fix the issue.