Turn off / Bypass all kinds of processing except for those that is a part of the sound design.
Export / Bounce each instrumental and vocal track individually in (WAV 44.1 or 48 kHz 24/32 bit format.) Please make sure that all tracks are exported from the very beginning of the song to the very end.
Make sure all tracks are named correctly to their corresponding instrument (e.g. Kick, Bass, Guitar,Lead Vocal, etc… )
Compress the tracks into an archive, indicating the tempo of the song in BPM format in the title of the archive.