What would be the best way to skin my phone housing using the skinning starter kit. should i cut the button holes out while laying the carbon fiber or cover the holes then cut them out once the full process is completed.

Christoforo ... From one carbon novice to another >>>

    DON'T ATTEMPT to cut out or disturb the weave whatsoever while doing the layup or you'll be sorry. Once cut, the fibers are next to impossible to keep oriented in the weave and things will start falling apart on you. I had the best results covering all the holes and cutouts on my motorcycle dashboard with carbon and trim out with scissors / wire cutter / Dremel tool AFTER its HARD. 

Maybe the "experts" have a better method ? Good Luck.

GEARHEAD .... USA  

Another method is to lay up your carbon, wet it out with resin and then use a very sharp Stanley knife/craft knife/scalpel to cut the fibres away, you have to be very delicate sort of brushing the blade over the fibres/ pushing straight down to not disturb the weave, it can be done with a nice sharp blade. It will leave and nice clean cut line and the fibres won't frey if they are wet out with resin. 

Dont put carbon fiber near a mobile! you will probably find your signal looses a few bars