Barbs book is available through Celtic Dragon Press I'm sure if you google it you will get it.
It has taken me some time to come up with the design and fit that I am comfortable with. Fabrics play a role and I have made dozens of kilts for myself till I came up with the style I like. I have used about 10-15 resources and I have learned something from everyone. Chatting with other kiltmakers like a few of us did in Philly this year was great. Also listening to folk like yourself in what you want to see in a kilt we will use if we like the idea. No doubt in your search for a kilt, and in fact , possibly a solid colour kilt you will see a unique style that each one of us has. It takes me about 14 hours to put one together, that's not taking into account getting the supplies, hardware etc. Also the equipement. But I did start with a 1929 Singer straight stitch that could just about do everything I do now.
The leather kilts demand a different skill set, lots of planning to make it all come together.
In the end with all the experimenting I did I could have bought a lot of kilts for what I spent in R&D. But what a blast it has been!
There are also resources in your Library so who knows we may see one of your creations soon!
Cheers