Usually, I'm not one for neons, but if it's against black and includes a galaxy or something like that, I'm all for it!
The three things of importance to me that I would mention is:
1) I would prefer something that isn't anthro, it's just not something that I'm into. An implied shapeshifter (a human with subtle cues that they may not be) or an alien humanoid is completely fine with me, though.
2) Visible drool makes me feel very nauseous. Blood would be fine if we weren't on Chicken Smoothie, but drool is a no-go.
3) Multiple/missing limbs are also a no-go. Unless it's an alien that has a purposeful use for multiple limbs, I would prefer the normal amount of limbs.
Otherwise, have fun with it! Experiment a little, if you'd like ^^
Thank you for the opportunity! <3