Dear Sam,
STOP beating yourself up because your model is amazing and you know it. The texturing of the character is amazing, not only the color theme, but the coral on the octopus lady as well. However there is no lighting or shadow information on the sculpt and it would be nice to see a slimy or wet material on your creature. Otherwise these is amazing art here and you did a great job on it.
From
Xendria101