Welcome to Gaia! ::

I think the arms layer awkwardly, it'd be good to swap those out with something. Le Secret has good arms, there's also Punishing Luxuria and some others. Phoebe the Fool has some nice eyes if you want to swap those out; as for mouths Golden Lips would be perfect, or maybe Golden Lady Lucie.

I think you should get rid of the flowers at the bottom, it's too much black. Try to play up the gold/champagne color a little more, you could try adding Vigesimia's Wings. Bright World Protector and Light World Protector also have some things you could use; the former has jewelry in that yellow color, latter has arms/wings. Golden Immortal Veil, Rosamund's Yearning, and Gilded Immortal Veil have a lot you could use too. I'd recommend checking around the gold shops for jewelry as well.

You could also just go for black/white if you change the eyes and the moon, but that's a different pile of suggestions entirely.

To be honest it's currently so basic I'm having a hard time judging it, there's a lot you could do with it but it feels really incomplete. Depending on how you go the hair might be better in a different color, too. The lack of a mouth is seriously bothering me. 5/10.

TBE
9.5/10
I love the theme and colours that you have going my only issue would be all the cream is pretty much in a band alone the centre of your avi, maybe there's a few items that could help balance this out but I don't know plus doing this may also ruin the flow of colours.
@ rater not sure what I'm going for with this avi