Do you ever create something only to find out that it isn't structurally sound so you have to remake it. This is how I feel about the 3D models I've been making lately. I suppose it's alright to learn from my mistakes, but I've had to redo the rigging for my models several times.
For example, on my first model I couldn't figure out why it wasn't mirroring properly. I eventually solved the issue before learning that IK exists. I may end up redoing the rigging again because IK makes rotating the shoulders really difficult. I wish rigging was easier, but I guess it's a challenge I'll just have to face.
On a more positive note, I'm planning on creating something for low-poly day. Originally, I wasn't going to do anything at all since I found blender to be really hard to deal with, but now that I'm a bit more familiar with the program, I could definitely make something.