This is not a critic, consieder this like advice.
Ok, your mix is good, but lead guitar needs some efects. To me guitar sounds like you plug directly in your soundcard and hit the play button.
Try some plugins. The best free plugins on the net is guitar suite, you can use them.
SimulAnalog Guitar Suite
Also I wonder why you don't use those program whis came with tone port. It has a quite good plugs to color your guitar.
Audacity is good but why don't try some of better programs, they come with a buch of plugins like delay, reverb, compressor, limiter which can improve your sound in many ways.
Kristal for intance, it is free or just type free editor in search bar and you can find many of them on internet.
Your playing is good... for 6month player this is veeeery good. Just take your time and practice. Practice is mother of perfecy.
Hope you understand my little poor english.