作り方法 作る方法
What is the difference between the two?
作り方法 is simply incorrect. By definition, 連用形 is "connect(連)-verb/adjective(用)-form(形)", and thus it never modifies a noun arbitrarily. 方 in 作り方 is a suffix rather than an ordinary noun. 方 (かた) is not an independent word meaning "method"; it always has to follow a 連用形 to make sense.
However, a 連用形 sometimes also works as a noun, and two nouns can be directly combined to form a compound noun with a fixed meaning. So there are compound nouns such as 置き時計 ("clock"), 泣き顔 ("crying face"), 食べ物 ("food"), 入れ歯 ("denture"), 吹き矢 ("blowgun") and 押し花 ("pressed flower"). Basically these are fixed compounds that typically have their own entry in dictionaries. You cannot construct similar ones arbitrarily.