How do i take Cordyline cuttings??

One of my Cordylines has two shoots sprouting from the base of the trunk. How do i remove these for potting???
Heres a pic.

 

I'd let them get a bit bigger before trying.

Although I cant help much as I dont think I've ever grown one from cuttings.:o

 

My Cordylines were frosted this year and it has shot from the base, looking like yours but the main trunk was dead. I have cleaned around the base and removed the shoots with a sharp knife and making sure each shoot included some roots and just replanted them. All three still seem to be growing fine.

Mine were the same size as the shoot on the right of the picture.