Day28: atan2?

After James showed me how to get the first tip and body to connect/blend, I started trying to get it work for the other end.

I managed to get it but because I branch out connecting the ends, there are two shoelace overlapping when I merge the end product.

I gotta either get the connection to work with only a single vopsop without branching out connection, or find a way to delete one of the shoelace while keeping the other and making it look like it's one whole piece of shoelace...

It's really complicated to explain...

And I was also trying to apply my shader to it, but it doesn't have any UVs.
So I've tried attribute transfering from another shoelace to the current one but it doesn't really work out due to the fact that both are very different system and have different topology.
Tried using it as a NURBS but doesn't really work out either...

Today there was also a Maths for visual effect class.
Pretty cool stuff but really difficult for me to get it...