I haven't found much on this, and I have found astral projection to be an aid at times to evocation.
I would like to open this thread up to discussion both on astral projection in general, applied knowledge from astral journeys whether in evocation or otherwise, and also to evocations performed on the astral plane, which I have not seen much on on this board. I'm sure that others here have performed evocations while out of body.
Anyhow, this thread is open for discussion on any of these topics.