Before you send us your song, please make sure:
The song is finished. If you make any changes to your song after mixing, you may be charged again.
Make sure there are no limiters or compressors on your master bus.
Make sure your song isn’t clipping. Preferably, ensure the loudest/busiest parts of your song are peaking around -4dB to -6dB.
Export your song stems as .WAV in 24bit rate.
If possible, link some reference tracks in the submission form.