>>2077372Here are a few things I would fix or just trace differently on your next projects.
First, you missed 2 spots on the pillow where the colors don't overlap properly and create small gaps. I'd also strongly recommend to taper the end of your lines. On screenshots from anime, the end of lines might look blocky or rounded but since your are tracing with extremely precise tools, it'll look much better to use pointy ends on your lineart. The point of tracing isn't necessarily to perfectly reproduce a copy of the original. Due to how precise the pentool can be and how the vector won't suffer from quality loss after resizing, you might as well try to improve the whole image by making it sharper, more detailed and fix things that might appear as mistakes on the original.
A rule of thumb that might help make your lineart sharper and cleaner is to have nodes in pairs and their handles be parallel to each other. It'll avoid lumpiness and will make it easier to keep the amount of nodes to a minimum, which, in general, the lower the amount, the rounder your curves will look.
Hope this helps.