The best way to cut it is with a bandsaw but if you do not have one a hand held steel saw with a coarse blade (18 tpi) at least works well too. If you have no power tools this would be the way to go.
You can cut the profile out with it too, it goes quite easily. Then you use course files and finish with finer ones and then sand paper.
You mention a block. Scales are available in various thicknesses too, I have a piece of 3/8'' which is a good thickness for the average blade, it also saves you the trouble of getting it flat.
There is a danger in the dust tho, some threads were very recently posted regarding this, especially if you use power sanders etc.
Do yourself a favor and read up about that.
Good luck,
Mike