Hm, yeah. They kind of read as being "white", maybe because of the little bit of sunlight, or just because of the relative value of the "fluffier" parts of the picture in comparison with the darker mountains.
I was thinking if it would be possible to show some of those clouds being dragged by the airship as it moves, and/or a trail behind it. That would read more as something fluid rather than, say, the top of trees. But having worked a bit on it thinking "clouds" as I was placing pixels around, I "can't not" read them as clouds anymore. They're clouds for me now.
Same goes for the airship. It's not some weird thing/rock/ovni floating there, it's an airship.
You did a great job with the robes now. It looks very, very nice indeed.
I just think that some of the light that goes over the part that covers the shoulders, wouldn't be there because the sleeve of the arm that's holding the lantern would (possibly?) block it.
Maybe the face too, now that I think of it, unless it's some light that's being bounced off from the tree. If that's the case, it would reflect onto the top of the lantern/ring too...
As for the pattern, I do like it as a concept, though maybe it's a bit too busy and the colors should (?) be closer in hue to that of the rest of the robe, because it's at night, and the only two lights that are there are very strongly colored.
I thiiiink.
But I don't know. It may look very cool...
Maybe try and make the sleeves seem white, and have a pattern that's a bit subtler as to not impair our perception of what those things are...
Or not even white, but some more contrasty color in comparison to the rest of the robe. Just to separate those some.
EDIT: That would make me think different things from what I'm thinking now, that that's a misterious figure investigating or just lurking in the dark. It wouldn't look as "stealthy", if that makes sense.