Lamia and arachne are my personal favorite. 
Which species do you perfer?
Some scale texture along the red of the tail would be a nice touch, but it does look rather smooth as is. Nice stuff, thanks for sharing.
It's pretty well done and I like the palette and the antialiasing, but there are some details I suspect weren't intentional:
- the cream field withing the tail loop
- the lone tan pixel at the left lower corner of the background red circle
- the overlap on the top (left over right) doesn't match the overlap on bottom (right over left).
i like octomaid and lamia actually
i want to add scale but it weird to me , btw thank you :D