First an aside -- can we talk about my desire for a 5 thread serger with a built in straight stitch so I don't have to do all the seams twice? While we're on the topic, it will be self-threading and shoot rainbows out of its socket.
(still working on the green/black/white/gray dress.)
Anyhow and more to the point, have you guys seen this? Susan Khalje is offering a course on couture sewing at craftsy and its currently half off. This is the woman who does Camp Couture and usually has week long sessions (someday.... someday)