Ok so I am trying to cover this song

 
I am a KPOP coverist yes and yes I am a girl...duh ya know? Ok so how do I get my vocals to sound as warm as they do in the original song? The recordings sound ok but they seem so airy a bit and I want to make them warmer so they fit i the mix...does anyone know how to get warmer less airy vocals rap and melody ad harmony wise
 

I think the right sort of EQ might be a start. I would be rolling off the high end with a LPF and taking some of the excess air away.  Maybe working on the mids and lower mds adding some energey there to make things warmer.
 
Some plugins are really good for this naturally like Pultec EQ. It has got lovely shaping up top and can add some valve and transformer warmth to boot.
 
Be careful with the vocal reverb too and don't make it too bright either.