Advice - Do it in a big cardboard box or his cage if its got a big enough opening... Keeping them in a place with walls means escapes are less risky, and has proven very, very handy for us in the past.
And er... I tend to try the method with putting my hand down flat, then lift it slightly and let them run over both my hands e.t.c, but scooping them up gently should work too as far as I know