Great job! You nailed the "mysterious" vibe. My ear was begging for some sound effects of water lapping, even if softly. Especially towards the end of the piece. That's the only thing this is missing.

I really like this one. Especially the intro, it gives it an otherworldly feeling. Other than that, it gets a bit too repetitive and could use some variety. I suggest looking at Sasori's theme from Naruto Shippuden for some ideas, as your track had a similar vibe to this piece.

The mood and atmos here are great. Like others have said, the mixing is somewhat rough but it's really not bad at all

Great mood, I like the mysterious vibe you went for, I could never really guess which melody you were going for and I like the unpredictability, things you can do better is probably EQ some of the high notes and fix the annoying frequency for a more pleasant listening, maybe add some low frequency at some point to balance the overall composition, its very high mid range all the way

Good atmosphere, I really liked the minimalistic aproach. I think the mixing is a little rough, sometimes the tracks gets kinda busy. Other than that this is a great track.

I like the drone textures, and that is a solid foundation to build on. To take this further, I'd suggest adding some bass or strings to fill out the low end, using automation so the instruments don't cut off abruptly, and dropping in some SFX to fill the empty spaces. Reverb or modulating effects would also help push the sounds past their fundamental tones and bring them closer to an ambient, lake-like feel.

Overall, I get a spoopy—like a haunted fable about a lake vibe, so that's very fun!

Pretty interesting soundtrack, but the High Frequencies are a bit loud.. You could see what you can do with an Equalizer FX Plug-In though to cut the High-Pitched Frequencies, if you didn't know already. Interesting way how you composed this Soundtrack! I love Flutes in Ambient-Themed Music, especially if the Artist can figure out how to Live Pitch-Shift the Flute well.. Still, you tried your best, but don't let that stop you from making music if you enjoy it!

Good work here! You got a good vibe and drone going on there. As David mention, I think dynamics would go a long way of improving it, like making the flute come and go, or just some instruments like the strings going quiet and then picking up. (I am by no means an export at this! In fact I struggle routinely with making dynamics!) Other then that, you have a solid track here. Just polish up a little bit more and it will be awesome.

Just a heads up that link just took me to your profile. Maybe this link will be more specific for people:
https://soundcloud.com/taxid2404/mystery-lake

I thought the track had a good selection of instruments. I also thought of droning flutes for my submission. I think some extra dynamics would go a long way, maybe fading the long notes out gradually with a large reverb bus to give stereo depth. I think there's a lot of potential with a little polish, good submission!