Here's an advice that I didn't follow and hence you should.
Go to some shopkeeper and let him do it.
I ordered a micro sim cutter with adapter from eBay thinking it's costing around 150 bucks only and will be helpful in future too.
It damaged my sim. I had to take a replacement.
My dad owns a moto G and he got it done from a nearby recharge shop. His is perfectly done.
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