Notes from the "been there, done that" page.
Eileen, my wife, has excellent sewing skills and a Sailrite machine. Believe me when I say "Making a dodger is far more difficult than making a bimini." When you attempt the curves and the angles, the addition of lots of Eisenglas, the location of zippers, the allowance for lines to pass through or under, and the location of snaps, you do not want this to be your choice for an initial do-it-yourself canvas project for your boat. Two people with the patience of Job are required! Be prepared to rip out several seems before you are satisfied with the resulting dodger. We have made several, including the one on our current sailboat. Best Wishes.