Here is how you make a mold for a boat (these are in fact the molds for the I.R.H.. I finished all but one of them). The one that's left, station 1, dies in the stem so i'm still thinking about how to do that one.
Anyhow... You should have the station lines drawn. to build a mold you need to reduce for the planking and draw it on each side. Mylar really helps with the transfer.
Using tri-squares project the bevels that need to be cut onto the stock. Then stack the peaces on the chop saw and cut them out.
Tack them down and repeat. Be sure to have reference lines so that then positioning the molds onto the strong-back everything lines up correctly.
As i said before i finished up all but one for the I.R.H.. Next is the strong back, stem, and transom. So many boats so little time....