Both guitar and bass are pretty on point. Bass seems a bit too loud at times, and guitar gets a bit tinny in some spots.
Drums are the only lack in here, not sure if it's the mixing or just the samples/VST's used but it doesn't really cut through the mix. I've seen it in previous songs of yours too.
Composition/arragement wise, top notch as always!
So I'll take a sec and drop you a recommendation: https://theproaudiofiles.com/free-mastering-plugins/
You've got some pretty nifty mastering plugins you could give a look at there. I'm a fan of the Voxengo SPAN (but all Voxengo tools are awesome). Give them a look!