The incipit (opening) and explicit (closing) of Le rosier des guerres by Pierre Choinet.  Dated after 1470.  Note the opening is said to be "acephalous" (missing its head).  A "typical" bastarda hand--if, on the surface it looks messy and "difficult", you'll find instead that it is pretty standard.

Your reading assignment: incipit page/leaf, 4th line, beginning "ce monde est comparé à ung..." to the end of the leaf.

Your forgery assigniment: Second (eg last) page, lines 8-10, "L'an mil cccc" etc.  Good luck!