Depending on the material, I prefer to start with a spring centre punch - but not on thin aluminium! - or acrylic!
If necessary I use a hand pin chuck (revolving top pin vice) to make a start.
http://www.anticsonline.co.uk/2413_1_10903.html

I discovered the Unibit drill a few years ago and wouldn't be without it. Absolutely brilliant.
https://www.agriemach.com/c436-automotiv...43-unibit-drill

DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4