Have you started googling, "Why do my songs sound empty or muddy", or in my case: "why do my songs sound like crap"? A huge part of really getting your song to shine is learning how to effectively mix your elements together so nothing is overlapping or fighting against other instruments.
Typically, even EDM songs follow a similar mixing style to most other types of music:
-At the very bottom, you have the sub bass (generally below 60-80hz, but it depends on the genre) followed by the kick drum (100hz up to 250hz-ish), and then after that your bass elements (250-800hz).
==Think of this like a band: You have the kick drum keeping the beat, with the bass working with the kick drum to fill the low end.
==An analogy for EDM to Rock music, for instance, is that a bass guitar does the job of filling both the sub bass (to a degree) and the high end of the low frequency range (250-800hz).
-Followed by this, you have your mid-range elements (800-8000hz) that encompass a majority of the sound you'd hear if you were listening to a song, say, through someone's iPhone or some other device without much of a bass response. This will include almost all of your synth leads, pads, supersaws, vocals, and so on. This, in my opinion, is the hardest and most important part of the mix. You need to be able to layer multiple sounds on each other to have a full mix, but with too many sounds at once and without a proper EQed mix, they will blend together and sound muddy and not clear at all.
==In a band setting: Vocals, guitars, and the snare encompass this range. They're a very crucial part of what makes the song, well, the song.
-Lastly, you have the high end of the frequency spectrum (8000hz-20000hz). A great rule of thumb for EDM is that you should almost always cut out the 18000-20000hz frequencies, because they're "technically" not very audible to the human ear but they do cause some harshness in the mix. This frequency range is pretty much just the high end of your saws (or pads) and everything cymbal related (shakers, hi-hats, etc.). This is also very important to keep an eye on, because if your hi-hats and cymbals aren't working well together, then you'll have a harsh mix that annoys people listening to your song (and you!).
=In a band setting: Hi-hats, Crash Cymbals, Ride Cymbals, Partial guitar
Quick Mixing Tips:
-Too many instruments in the low end can cause extreme muddiness and can really drown out your bass synths (and kick drum). I tend to cut my bass synths pretty heavily around 180hz to make room for the boom of the kick drum (this depends on the sample you're using, but this is generally the case for ME personally. Don't take this word for word!). Try not to have too many synths in the bass frequency range, but if you do, cut some frequencies to make room for everything.
-Cut rather than boost, almost always. It's SO tempting to boost your sub bass to make that thing pop, but this just causes more problems later when it comes to mixing everything and mastering. Instead of boosting it, try cutting literally EVERYTHING else at the frequencies that the sub bass is occupying. It'll come through a lot clearer (and harder!).
-Keep it simple. It's really tempting to throw on synth patch after synth patch for a really diverse song, but you can often achieve greatness by limiting your leads and basses to one central synth.
-That being said, layering is KEY. For those who aren't sure what layering is, it's when you stack multiple synth instances on top of each other, but in a complimentary way. Basically, having 3 different "leads" but 2 of them are quieter and EQed to let the main one shine, but it'll sound fuller because there's a lot going on in the background (but it won't muddy the mix). You can also do this with samples, as well. I recommend layering kicks, but EQing out every low frequency for one of them. It'll add more punch to your kick, making it stand out more, without too much bass.
I found this guide here that's been very helpful for me and I want to share it with anyone who's looking to improve their mixes:
You can find this image at: https://noisefirm.com/chart-will-help-you-improve-your-mixing/ as well as more general information about mixing.