While we have a number of sources for choreographies from renaissance England, we have no works that clearly explain dance-technique: that define what terms mean, or how to perform steps. Thus, the usual approach is to try to cobble together something that seems plausible from hints in English texts, and from what we know about contemporary French and Italian dancing.
The Gresley MS is particularly troublesome, as it contains many step-names that have no clear analogue in any other source - "rak" and "flowrdelice" are two such.