While There's some good advice for building your own rig going on between oldturkey and mayer, if you're just doing a few, it's cheaper to just pay for them to be done as opposed to building an expensive and quality-variable setup. In the US there are a bunch of services which do it for a fairly small fee, however they mostly send it out to india to get it done cheaply and ship/upload it back. Since you're in india you can probably find locally some shops who will do it for at most a few thousand rupees.