I’m Matteo and I work with audio and music for 5 years. If u want to level up your music, this is the right place to stay.
U have to send me WAV Stems (preferably in 32 bits if u want more precision on the mix). I recommend, each sound must be separated into a single audio track and the tracks must be clean (so no plugins). Also send a reference track if you want to achieve a particular result or your own reference mix of the track.
I use Studio One 4 as DAW and sometimes I mix basses in Stereo (lol). Anyway, I worked with a lot of guys of my city.