First-R125

I will get a YZF R125 soon, i was wondering, can you make the bike's accelertation faster? the power more?

What are the best modifications i can do to my bike? (Red Yamaha R125 08/09) As i am a new rider, i know nothing, lol. I want to modify my bike, the looks and the sound mainly! But i do not know where to look for these bits or where to buy these thing =( The bike already looks really cool, but it can look much better! (open to suggestions) thank you =)