You have nailed Flicker! Those are just wonderful. Very "Yamara" in feel, which is Flicker all over.
And I love, love, love my Ernie. You've really captured his personality, with the happy open face and the freckles.
All of these are very nice. I agree with Pkitty that the sketches often have a better feel for the personality than the full illustration, which is what makes them wonderful. Morningstar is a little too "va-va-voom", but I don't think anyone mentioned in her description that in addition to being very tall, she's also really slender and not particularly busty.
Aravis might need some work, but I'll let him respond on that. It is remarkable that you've actually made Aravis look a little like his player, who you've never met!