Hi
@Veance This is the first song of yours that I've reviewed - welcome to the forum :-) Others have commented on the audio quality of this so I'm not going to repeat it. In answer to your question about the voice - yes, the more you sing the more range you will have but don't force it, use your diaphragm to produce the power.
As for the song, well I thought it was pretty damned good. Catchy, rolled along nicely,interesting, well played and varied musical ideas. Your voice is great - I think it will record well once you've got your acoustics sorted. Basically you need to add sound absorbent material to wherever you are recording - carpets,cushions, curtains and maybe invest in a little vocal booth that sits around your microphone and cuts out the sound of the room. Reverb is necessary in recordings but you need to put in the right type on the right tracks to give the depth of sound you need and create a good sound scape.
Really enjoyed this track and I'm looking forward to hearing more.
M