Graeme, it's got some nice lines, though. A holmegaard has limbs which are parallel from the fades out towards the end of the limbs. Then they abruptly narrow (over, say, 2 inches) from full width to about 3/4" or so. For outer limb thickening, you have a couple choices.
1. You can abruptly (over the same 2 inches) thicken the limb to about 3/4" (giving you a roughly square cross section at that point).
2. You can gradually increase in thickness over the length of the "outer limb" until you reach about 3/4" thickness at about 2 inches short of the tips. Then, the tips abruptly reduce to 3/8" thick.
I like your bow, but if you want to build a real holmegaard, go to the buildalongs and find adb3112's how-to on holmegaards. You can also check out my hickory backed osage holmegaard in this Bows section, for a little variation.