Hi Niels,
Okay, I've been through the lyric a few times, and I've tried to write my impressions, but now I'm starting over.
I like imagery using mirrors, especially as "portals to magical realms". Unfortunately, that kind of setup gets me thinking in terms of fairylands or happy places. Typically, (in my experience, anyway) when something is described as "magical", it's a good thing. Clearly, though, that's not the case in this lyric.
So, the mirror is a portal. The speaker/singer is moving from the real world to a magical world, which turns out to be the Netherworld. He's gone there, I assume, to find his true love but he ends up "broken and alone". So this is a sad song. So, for me, I would prefer to get rid of the "magical realm" setup, but maybe you're going for the unexpected twist?
Anyway, on to the lyric potential. It's an interesting little piece, but quite short. In general, it comes across to me as more of a free verse type of poetry rather than a lyric. I'm pretty attached to the idea of rhyming lyrics in songs and rhythms that flow together in identifiable patterns. I think it's probably a good example of free verse, but I'm not sure it would make a good song.
The inconsistent rhythms would take some work to fit into a rhythmical melody. I'm don't know what you had in mind. Maybe you're thinking something less structured--recitative style maybe? I could see something like that working. A dirge-like melody wandering morosely through the lines until it expires painfully at the end.
I don't mean to be all negative...sorry...I know it sounds that way. I am often amazed by what someone is able to do with a lyric that appears to me to be far too irregular to fit into anything musical. I'm sure someone could do something wonderful with this piece. I think it would need to be pretty slow and maybe repeated a time or two to make it long enough to count as a whole song.
Obviously, this is all just my opinion and might not be relevant to what you are looking for at all. Just ignore it if you don't like it. I'm very pleased to see you participating in the forums and I look forward to seeing more of your work.
Vicki