The composition on this album is pretty strong - there's a good sense of melody ("Interlude" and the last couple tracks in particular are just lovely) and the rhythms have a good feeling to them & are pretty diverse. I think the big weakness is the production and some of the sounds used - the drum samples can be pretty sterile, or else kind of weak-sounding (e.g. snare on the last song), and the melodic instruments are not very subtle or expressive. You might explore the use of vibrato and changes in dynamics to make your melodic leads more emotional.
Also, a more specific criticism - when you use bass lines, e.g. on the last song, you should try to accentuate the rhythms being played and the chords being played, rather than just treating it like another instrument. In general, I agree with Sudstep's suggestion that many of these tracks would be improved by a steady bass line - it would really fill out the sonic spectrum.
I think you are talented and should keep making songs. I enjoyed these ones quite a bit even with their flaws.
Good points, my friend! I'm learning how to produce better tracks yet, this was the first idea I had, would you recommend me some samples and more advices?
As I said, thanks for the critcics! 
