My goal is to improve the quality of my backing tracks.

I create single mono .wav files from BIAB.
I mix the instruments in biab, add very little reverb and export the wav.
While I have RealBand and Logic Pro, I don't really use them.

I believe I could do a better job.
I'm just not sure where to start.

Today I became aware of MP3gain on this forum. Ever the inquisitive type, I exported a few BIAB arrangements to mp3 and found every one had some clipping in it.
I used MP3gain to "correct" this. While the volume was lower I did think the quality had improved when compared to the original .wav I created previously.

So my question is what few tips/tricks might I start with to improve the quality of my tracks. Mostly they are bass & drums often with a rhythm keyboard or guitar.

Thanks in advance for some direction.

biab2024(Mac) Latest Build
Mac OS Sequoia 15.0.1
Apple M2 pro 32GB Ram
Logic Pro 11