Critique

BLUE WORM IS CUTE WORM! The simple design and the soft colors makes this character feel friendly.
A few things to look out for is tangent lines. You can see a few with the head antennas on it's head and the right bottom/top teeth that all connects with the tongue. Tangent lines flatten the image so try to keep lines like that separated.
The lower half of this worm could also be improved by making a big general shape first then adding overlapping circles within that big shape to keep the roundness rolls consistent.
Overall, this is a very cute character! Good job!