Teen Siyhara

Well I completed the picture with colouring, tatoos and spikes.

The tatoos all have a purpose. The shoulder tatoo denotes her as a scale-less dragon.
The Thigh tatoo denotes that she was the first of her clutch to hatch and therefore bears her fathers family symbol/lineage
As for the bands on her tail they symbolise that her clutch contained 4 dragons.

These customs are common among the dragons of the Draco Islands although not all follow this custom anymore.

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This is Siyhara (pronounced see-HAR-a), one of Valinors' three siblings. The other two being Erandor and an un-named but dead sister.

This one isn't finished yet as tattoos are yet to be drawn in and colour is yet to be done.
This is lineart which the posture is drawn from memory of a pic I saw once of Cynder, don't know which or by who now.

Siyhara is unique in that she has no scales, just a tough skin which makes her more vunerable to attack but faster and far more agile.

Valinor was closest to her more so than any of the rest of his family but when they were young she dissapeared so her fate is unknown.

EDIT: I found the original pic I based this off [link]