I've been steadily working on this outfit for my husband for--ooh, several years now, finally culminating in the tailcoat, finished only a couple of weeks ago. I would definitely consider the tailcoat "advanced sewing!" My mum gave me a great deal of help with the tailoring--I'd never done anything like it before. In fact she helped me with most of it!
I was particularly pleased with the fabirc--a lovely quality wool worsted which we picked up for not very much money at all in the Los Angeles Fabric District.
Ok, it's not perfect, and a real expert in historical costume could pick many, many holes. But I'm damn pleased with it, and you've got to admit it looks good on him, haven't you?