I thought about this for a while.
Age
I view age like this:
1= 1 month
2= 2 months
3= 3 months
4= 4 months
5= 5 months
6= 6 months
7= 7 months
8= 8 months
9= 9 months
10= 10 months
11= One year
12= Two years
13= Three years
14= Four years
15= Five years
and so on
20= 10 years and so on
30= 20 years and so on
40= 30 years and so on
you get the drill.
Emotions
I feel like when the dragon gets mad, his/her spikes rise up, telling the other that they are upest (aka angry). I also see that the ears lay back when sad or angry. I also see that the pupils in the eyes change when scared, angry, or sad.
Blush in normal dragons are pink, but with other types, like IceWings, can be a different color depending on what blood it has. If the blood is blue, than it is the same color as the blush, for example.
Manes on SandWings
I view the manes on SandWings don't HAVE to be the same thing. They can be spiky, wavy, wave and spiky, folded, and other ideas.
Eyes
I view the eyes of Sand and Ice as shades of black on the sclera, insted of white. This goes for Ice and Sand hybrids as well.
Conclusion
It's totally fine if you want to go with my ideas, but you don't have to. I honestly don't care if Tui says the real deal about age, it doesn't make sence to me. If you want, share your ideas.
I hope you enjoyed my opinions.
-Nightslayer