RE: Form??
About the same as compound IMO. Draw arm parrellel with arrow, bow shoulder down, head inline with body(no leaning back or forward), not entirely gripping the handle, but not as loose as a compound. Longbows with low wrist is going to have a different arm position than say a bow with high wrist.
Also other open items that are person, is the stance, open or close, and head lean.