You can't write a Fanfic or character bio if you're posting in Chatterbox. Get to it!
I want to murder somebody in their sleep (and never be caught, and never commit such an atrocity again).
Find a stranger in a town pretty far away. Park your car outside of the city. Use gloves and burn the clothes you wore during the murder. If you want to slit his throat, don't pull his head backwards to expose his neck; that'll make the whole process much more messy and you'll have a lower chance of finding the 'sweet-spot'. Don't drop the murder-weapon in the town of the crime; clean it somewhere moderately far away from the scene and dump it at your ealiest convenience at a spot far away from both your home and the scene of the crime. Remember to have more than a half-assed alibi ready, but beware that if it gets to that, you'll have all but been exposed already.
When choosing your victim, find a homeless guy. If you're in Europe; find a slum and kill a local. If you're in Denmark; find a slum and kill an immigrant - Roughthe corpse up afterwards and the authorities will call it a gang-related crime. Nobody will suspect a thing.
Don't use a gun unless you have a silencer. If you have a silencer, you don't need advice or help.
I want to start a non-profit charity organization.