I already do almost all those things. The slow time shout is the only one I don't (because I haven't gone looking for it yet). Fighting one enemy is a piece of cake that way.
(edit: I melee dragons with no problem using those techniques.)
I have problems with multiple enemies at the same time. Those tips don't work as well against Bandit Outlaws and Bandit Chiefs, which I always seem to encounter at the same time. They always flank me. Especially once I start going on the offensive. I go to finish off the chief and one of their lackeys runs me through with a greatsword while I'm doing it. Yes I'm wearing heavy armor, and I focus in Restoration. Shield bash is one of the only things I can use to get the bandits to stop blocking.
(edit: maybe I just need a follower at all times.)
it works for multiple enemies too - just keep walking back all the time and try to focus one of them, and small tip: when fighting more than 1 enemy ALWAYS have some stamina unless you want to get instakilled.
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