Now for the explanation of his features. Sodium is a silvery metal, hence the grey colouring, and burns with a yellow flame, hence the bioluminescence. cough Avatar cough. Na is his chemical symbol. It’s used in sodium chloride (aka salt) and in most streetlights - so I put a lamp-post on his tail :D That’s why they glow with a yellow/orange light, see? The number 11, which is the number of protons he has and what makes him irrevocably sodium, turns up in the numbers of dots on his tail and crests. Oh, and the little glowy dragon in the bottom-right corner is his single outer-shell electron, which he loses in order to bond with most of the group 7 elements. The reason he looks so concerned at the raincloud is that his group of elements all react violently to water. Caesium is the best - it explodes! Sodium just melts and whizzes everywhere… Which is a nasty fate for any dragon =P But a very exciting experiment!
I enjoyed doing this, especially the little electron dragon - he keeps turning up doodled in my Physics books now. ;P It’s little things like this that make science so fun!