A character sheet of my OC, Adramus! Done around 2015

The drawing of him at the left lower corner of this image has his present colours. I'm still thinkng of making slight alterations to his colour pattern and palette, but I have no idea how to improve his look u_u'
How do you make a fire dragon look original and such?
The scales which have the most intenstive red colour (and thus are the furthest away from orange and yellow ones) have darker, semi-black markings on their perimeter and ridge.
I suck when drawing winged characters on small paper sheets, I can't make their anatomy right, and at the same time make a nice pose. Hence, I had to do two sketches. - one with the exact pattern of his scales, and one with the proper anatomy of wings with body, and one sketch of wing alone.
His eyes are generally orange, but turn bright yellow near the pupil.
Oh and yes, he has his horns on both sides of his head!

I generally suck at character sheets, I think it's only the second time I'm attempting to create one, so please, please critique the hell out of it so that I can fix this mess.

Adramus © me, it's high time I got myself a proper oc (fursona? idk really, I rp as Adr, and I am thinking of ordering his fursuit in distant future when I have my own money for buying myself dumb useless awesome stuff C: )