Reply on vocal
First of all, don't say mastering the vocals cuz mastering is done in high-end studios, wut we call mastering at home, even if you have that pro tool and those waves plug-in is pre-mastering.
But to get your vocal to sound radio-like, apply a low-cut of 100hz with a eq or a filter to cut the mic rumble, boost a lil bit from 5k to 15 k, reduce a lil after 15k, then pass in a compressor with gentle settings to give your voice that broadcast feeling, after in third, use a de-esser to reduce NOT CUT those sssss sounds from your words. always de-esse at the end, never before eq. So the order is : eq/filter low cut (completely cut) and hi boost (gentle), compression, and de-essing. Then ya might add delay, echo reverb, or wathever creative plug-in you might wanna use.
That's it for a good sounding vocal. Always keep in mind the GIGO rule : garbage in, garbage out. So the more your original takes will be good the more the will be at the end of the process.
Holla Ace
www.acebeatz.com