(Disclaimer) I review this way not to hate, or troll, or for any negative reason. I am going to review you to hopefully help you. However you may take all the following negativity in any way you see fit.
Forgive segments of copy pasta. I have typed this up for several others today and felt it would be fine to simply take sections of previous comments i left.
Every sound is in the same channel from what i can hear, try separating them into a different channel, and assign them to a separate mixer track as well. This will stop allot of the sounds fighting for control over the same chan. If you hear a sound all the sudden get way softer than you intended it when another one is starting to play, this very well may be the answer.
The whole song seemed rather empty, you had allot of vacant hertz ranges going on at any given time. The following hertz ranges aid with the following things. 30-140 give or take, add body to a song. It gives it a flow if you will and helps blend tones and establish a feel. 140 htz to 400 htz this is your tonal bass or the bass that you generally hear that helps set the key or mode of a song. This is also where songs can tend to get muddy if not eqd correctly. mid range 400-2.5k give or take on taste, this is mostly where lower ranged chords go in to set the key in which something is being played. Upper mid, 2.5k -5.3k- Higher chords can be placed in here to help establish a mode of a said key along with leads. If chords are placed here they usually accompany the drums to emphasis the beat or add to syncopation. 5.2k-18k ( not much use going into 19-20k as those simply mud up the mix for the most part) this range is your high hats, harmonic tones of melodies and the crispness of the song all rest in this range.
General mixing tips- You should make sure to leave the unmastered kick below -6 or -8 db, ( depending on genre) that should be the loudest part of the mix, followed by the bass. pads and chords depending on how loud you want them should generally fall under -10 give or take depending on taste
+ 12 db = 400% volume increase.
+ 6db = 200%
+ 1 dB = around 10%
0 dB - No change.
- 6 dB = 50% volume decrease (half the original level).
- 12 dB = 75% volume decrease (to 25% of the original level). ( image line db guide)
You can find several other tutorials online about these subjects. I would also suggest looking into the following vst's and learning how to use them. Sylenth1, z3ta, refx nexus, Native instruments massive.
I hope this can help in some way, i saw you on the collab forum and figured id leave some advice. If you ever are in need of help in any way send me a pm or add me via skype at zafrece.comezo and ill do my best to provide what i can, be it information or aid.
Zafrece