GIVE YOUR MUSIC WHAT IT DESERVES:
Mastering can significantly improve the final sound of a music track and is often one of the most expensive stages in the recording process. It ensures that your music will be heard more consistently so that it stands toe to toe with professionally released tracks.
For best results you should send your mixed track in the highest quality possible (I would recommend a WAV or AIFF file but mp3's will be fine). Try to leave between -6db to -3db of headroom on the track you send to me so that I have plenty of headroom to work my magic!
If you have any questions please let me know, i'll be glad to help!