The quality of a mic can make a big difference, some singers have favorites that color their voice they way they like. Of course sound proofing a room to some degree can reduce the number of takes you need.
There are higher resolution, lower noise pro A-D converters that might make a difference if your computer has a crummy one.
Im an artist but i want to start recording at home, I already have software and a mic i just could use some advice on how to make myself sound as best as possible