>>1902887There are a few instances of color peeking and the skin tone is a little dark, but there are more fundamental problems here.
1. Too many nodes. For all vectors, but especially minimalist ones, you want to have as few nodes as possible. Knowing where to place them takes practice, but think of it as a challenge of how few you can use to get the curve correct. This will prevent things from becoming jagged.
2. Lines should have a consistent width. Rather than tracing out both ends, just trace the middle and use a stroke. This will keep the width consistent and will look better. likewise, for parallel lines, just copy paste so it's the exact same curve and distance in between is preserved.
3. Frills looks sloppy. Frills look really nice when done well, but can easily ruin an otherwise good vector. Take your time here, do not rush it.
This looks really nice from a distance, but if you make these changes it would look a lot better zoomed in too.