Your production on this track is excellent. The sounds you use are all well-suited to this style, and your gradual layering of sounds is what makes trance so engaging as a genre. At 1:07, I don't feel that there was anywhere that this piece truly opened up, but you've said in your description that it's only a demo. This felt like the introductory part of a track where you've built everything up to 90% capacity, and I can imagine the track opening up into a heavier "100%-all-the-way" mode following the echoes of the drum that you have used to conclude this. I think that this is definitely an excellent beginning to a trance piece, and your melodies are interesting and exciting. You seem to have a great feel for this genre and an even better ear for production and mixing. As I've said, the only thing this track feels like it's missing is the rest of it; however, if you only planned this to function as an intro, this is absolutely flawless.