Lo'ar da Ederra

EDIT: Reduced the glow in some places and changed it to PNG.
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"Lo'ar da Ederra" meaning "Shadow of the Ancestor".

It's an Exam artowrk for my Art Exam that I did today. xD
yay for glowing stuff lol.
I really couldn't think of a good background plus I didn't really wanted a complicated BG, just to focus on the dragon.
Well I don't think I have any more to say.
If there are some standing out mistakes tell me and I'll fix it on the rest of my 5 hours.
But tell me what I COULD fix OR improve in this drawing.
I think I might also reduce the glow next lesson(I forgot to take the Photoshop version lol) because I think it might be just too strong, well tell me what you think!

Time taken: 4 hours
Tools: Photoshop Elements 4(school lol) and tablet.
I also listened to different OSTs from Katekyo Hitman reborn, Wolf's Affinity, Twilight Spirits and OPs from Katekyo Hitman Reborn as well.