"Of youth's trail vanishing" isn't an inversion -- it's different to "of youth's vanishing trail" because the first puts emphasis (of meaning, not of meter) on "vanishing" and the second emphasises "trail". It could possibly benefit from a comma, but this is poetry and it's not necessary. Of the two -- although it depends on the context -- I tend to prefer the original.
...and milo beat me to it
*I feel like I'm in the Sixth Sense today... you know how dead people don't realise they're dead and just keep talking to empty air anyway?
...and milo beat me to it
*I feel like I'm in the Sixth Sense today... you know how dead people don't realise they're dead and just keep talking to empty air anyway?
It could be worse