Great ambient music.
First of I love the wide range of sounds you used in this. the guitar site nicely in the mix with all the other synths and is very subtle but effective. I love the sound of the synth you use at the start. The synth that comes in at 0:30 has an interesting texture and movement however I would've spent a bit more time EQing it as it can be a bit harsh at points.
Great change of pace at 3:30. The bass hits in the right spot and a cool subtle use of stereo delay. I like how it builds up rhythmically however I felt when the high hats came in they were a bit overpowering. Great arpeggios on the guitar but I wish you loosened them up a bit. The quantisation makes them noticeably programmed and for ambient you want things to feel loose and less perfect.
overall I think this is great ambient music, lots of interesting textures and melodies and very well arranged. I look forward to hearing more from you!