Sorry for the late reply! This was a bit of a busy with life week for me (I was gone from my computer for a most of the time). You might be able to make it more stereo by exporting each track/stem individually then pan each one or add stereoizing effects like chorus, ping pong delay, stereo wideners, haas, or anything with a spread knob (Kilohearts puts a lot of spread knobs on their effects). I'm not sure what i would recommend to pan as it's hard to judge without messing around and seeing what works but things I could think of are: slightly panning the hi hat to the right or left, maybe a little bit of stereo tremolo to the melody line so it moves (this could become annoying for the listener so it might not work), any background fx that don't have a lot of bass could also be good, and the vinyl crackles
Don't have to apologize. :) Good ideas! I started to mix my old tracks, and I started to add more "life", more stereo for each. I tried to add more reverb to all of it. I don't really satisfied. Maybe a little very soft chorus could be better. I tried to add another layer with pingpong effect for the leads. Maybe it will be better. Thank you, I learned a lot from you. :) Hope I will meet again. :)