This is gonna be brief, so you'll need to research, but it might help you start.
Criticisms - Nepotism, greed, unbiblical ie. purgatory and indulgences, too fancy/rich (but remember that Henry's reformation was arguably more to do with the money/land he could gain rather than having criticisms of the way it ran - shown in his religious conservatism)
Henry VIII - He literally changed the religion, and split from the Pope. Pretty important. He utilised the legal use of the council, which monarch's hadn't really done before. There are lots of acts and stuff, look these up and learn the dates. Again, make it clear that most of this was to do with personal issues (Great Matter) and not because he was a defiant protestant.
Edward VI - Continued the reformations Henry made. I'd split these up into two sections with Somerset and Northumberland - as reform pace differed between them.
It's probably also important to look at public opinion/reaction to the changes, and how successful they were.
Hope this helps X