I think your voice would be perfect for adult Asriel!! You could try talk lower and a bit more softier when doing young/little Asriel! ^^
I'd love to give that a shot! Is there any specific lines I could try or should I try the audition lines with the lower voice?
I think that at XTale 10th Timeline (last episode of XTale) at very start there's some small lines with little XAsriel you could do a little training with!
When you feel it's good enough you could try re-do those two lines with young Asriel!
Obs: in the line: "He's a bit timid because he arrived the underground a few days ago" Asriel is likely more of a child.
At the line: "Are you sure you're eating your vegetables?" Asriel is a Teen, he's refering about XFrisk (whinch is fused with XChara) about his lack of grown, worried about XFrisk health.
Sorry for my late reply lol. Can I add you on discord and send them there when I'm off work?
Ofc!! Its @themaskofrabbit ^^
Sent a request!