You are taking a welding course...Talk to your teacher about a final project involving building a frame. Get a a budget 4130 tube set and boring lugs...Carve your own beautiful lugs and put the frame up as a confidence builder for yourself and those you talk to about an apprentice job.
I'm where you are at. I'd love to build my own frames but the time and money involved is really not so great. Sycip IMO makes nice frames but is more of a mass marketed boutique brand.
When you consider the hours that go into a frame and the equipment needed to build custom frames you are looking at pretty low wages. It is a labor of love.