Modification on my Indica Xeta

I own a Tata Indica Xeta. I am planning to start modifying it.I would like to start with small small works !
So.. can someone suggest me wat i should do .. Since i m just a starter... i am looking into works dat doesnt cost me much but at the same time it should be effective.

2nd thing... i would like to know ur opinion in installing k&n filter. Does it increase the sound of the car in installing it?
I actually would like to increase the sound a bit.. Not so rough.. !! what should i do?

I have put alloy wheels. Now i want to paint the drums(brake).Which colour should i paint the drums for black colour alloy, silver colour car?