I went back and reviewed the training images from scratch, but I'm still not entirely sure about them...
The depiction of the eyes is a bit harsh.
Include these prompts at a minimum :
1boy, male, mature male, human, blue skin, teeth, sharped fang, yellow sclare, slim, sharp nails, fingernails,
clothes:
black hood, head fins, white robes, sandal, staff, jewelry, necklace,
Negative:
3d, bad teeth, extra fingers, extra legs, multiple legs, bad foot, extra toed, extra staff, (dual wielding:1.4), eyebrows, watermark