You have very good advice!
Making her smaller would make the scene definitely look more epic and dramatic.
I jump to the actual painting way too fast. To be honest, I believe I don't think enough before starting yet but that's why I joined the contest.
Getting into the workflow, getting feedback all while putting myself out there!
You still have 33 days left, so really you could leave the illustration a bit later and really flesh out everything else (and those thumbs) a bit more if you're not sure (and if you have the time of course haha). It's up to you though! Imo you never get a good idea on the first try. But if you really try and work on more you could end up with something even better!
Her original set design clashed a lot with her actual outfit, when you have horns that size and shape you can't have big shoulder designs or collars as the horns would both clip through them as well as just not look good, so I'm glad personally you decided to change them. The overall shape language of the 6th also looks more fiery so I think it suits her more!
Yes I noticed while sketching around that it did give me big problems and that it wouldn't work for attacks and such that I planned for her!
So now I scribble around with 5 and 6. 6 is turning into my favorite too because in the larger picture number 5 might not be very present anymore as they cling to her head a lot!
We will see
Ahh nice it's coming along great! I would suggest to change the colour of the background/sky though and either make it cooler in tone to offset and contrast with the fire or have it harmonise hue wise. I think with it being so dark just behind her as well she's blending into the background and has lost silhouette and detail.