Hi Meathead, listened to some of your songs quickly this morning. The first one's mix was pretty good, but the next 2 were extremely 'high end-y', then the next couple of songs had very harsh guitar in places. Listening on a computer's speakers or in cheap earbuds, this might not even be noticeable as the low end's all cut from those anyway.
Have you tried using a spectrum analyzer on your master buss? I have to admit I had looked at these before, but really didn't know what to look for or how to use one correctly, but recently watched a video tutorial which quickly explained the way to use one.
If you don't already have it, download the Voxengo SPAN plug-in. Put it on your master buss and select the 'stereo mastering' preset. It 'rounds off' (over a short time span) and does octave summation, and will show a moving curve. Look at the bottom curve (it's actual two blended together, left & right channels). A good mix is going to look something like this:
http://masters-of-music.com/wp-content/ ... alyzer.jpg - a smooth curve that is highest in the low-mid area, and gradually tapers down towards the high frequencies.
A bad overall EQ might look like this one:
https://www.pluginboutique.com//system/ ... 1459437461 which you can see has a sharp peak at 300Hz and a build-up of high frequencies from 1K up to 10K.
To 'fix' a bad overall EQ you can put another EQ plug-in your master buss, but its really better to go into your mix and figure out what tracks are causing the build-ups (or lack of frequency in certain areas), and EQ those tracks. You can find the 'suspect' tracks by muting other tracks or soloing tracks while watching the spectrum analyzer. Usually a very subtle scoop or boost of EQ on a track will tame a 'bulge' in the spectrum curve.
Also on your mixes, I noticed the following:
The reverb on your vocals sound very much like a garage room. What plug-ins are you using for reverb? I use Re-Verb, and use various IR files for reverb. A plate reverb is a good one for lead vocals, and you don't need much compared to a 'room' IR, which I use on the instruments and drums and BU vocals.
'Width' - I don't like wide-panned instruments, it doesn't sound natural to me, I prefer a sound that is more like you'd hear if you were listening to a band playing in front of you. However, with your mixes everything seems to be centered, hardly any panning at all - this might be an effect of using headphones for mixing.
Hope this helps!
BTW, 'Baby Moon' was my favorite of your tunes I listened to, but it suffered that bad EQ. If you have this saved as a Reaper project, you could dropbox me the whole project, and I'd do a quick re-mix for you. Otherwise, you'd have to render each track to WAV (remove any EQ or other plug-ins before doing so).