My request finally looks better, but the drawing of Aime and Jun looks too dark.
As for Byakura, she does look better comparing to her profile image. And I like their face expressions! 
I'm glad to hear that. :3
I might go in and try to turn up the brightness later on, but for now, time to finish school and work on more new stuff.
As an update, up next will be Uane/Kagura! I look forward to re-drawing Uane because I was very displeased with her sketch in particular, and it'll be cool to draw Kagura too, since I quite like her character design. After that I'll probably work to finish Nami/Tamaki. The only reason I've halted work on that one is because I can't seem to draw Nami's face in a way I'll be satisfied, but Tamaki looks great.
This always happens to me. I don't know which girls I'll do next, so you guys can pop in a suggestion.
And now Carried Away Grace strikes again, so here's a quick list of who I still need to work on:
Uane/Kagura (for their all-business, no-nonsense approach to singing
and desire to impress their families with their talent) *
Koko/Hinata (
for being moe lolis for their bubbly and hyperactive personalities)
Chiharu/Nagisa (because Nagisa is half-Brazillian and Chiharu is totally into South American/African cultures)
Ruka/Emi (
because lolis for their silly nicknames
and because they're the token lolis)
Yori/Hotaru (for being lazy deadbeats with natural talent)
Nami/Tamaki (because Jupiter) **
Fuyu/Himeko (
because they both come from someplace overseas)
Hiromi/Kaori (
because they're the sex appeal because of their rather scatterbrained or ditzy personalities)
Benima/Nozomi (for being rather harsh in their approaches to idoldom and taking the whole thing very seriously.
also because I wanted an excuse to draw Benima again)
Soumin/Kotone (for being from other overseas Asian countries; Soumin from Korea, Kotone from China.
also I wanted an excuse to draw both of them because Kotone is adorable)
Natsu/Ryoko (for being guitar-playing tomboys)
(* Will be working on this next.)
(**Half-finished.)