I used the linesplan of Tom Thumb, a design by Brett McCormack.
I liked the lines, well, that is reason enough isn’t it ?

I have downloaded this plan as a DXF-file for free from the internet.
This source seems to have disappeared, so I don't know where to get the plans anymore.
There are however more free plans to be found on the internet !! 
An other very usefull document when building a boat from scratch is the US 1m construction guide, which I also downloaded as a PDF-file from the internet.

The linesplan was plotted truescale, the frames cut from the plan and glued to a plywood sheet.
These frames were then sawn and positioned on a Plywood base.
I used 3x9 mm. Western Red Cedar strips to plank the hull, using CA-glue, temp fitting the planks in place with rubberbands, nails and clamps.
After fitting all the planks, the hull was sanded and coated using 165 gr/m2 glass and epoxy.
Not before this outer reinforcing layer is cured, you can remove the hull from the moulds.
Now the fitting out of the hull can start, keeltrunk, mastbase and frames must be installed.
I chose to install a skiff-like cockpit.
Sails were made, using sailcut, which is freeware sail designing software.