Moonwalking is a positive thing.If you cant stop doing it , you will need to think of tricks which includes defending and approaching with moonwalking ^^ Its not only flashy, it can be a suprise attack for the enemy, and you could get a combo out of it!
anyway Leviathan , when fighting a good player, it is sometimes better to defend with some short hop bair, instead of aprroaching with a nair or in your most cases a dair? =o
Im not saying its badd, but sometimes you need to defend in order to attack. A hasty approach can be countered. (Remen tought me this when I was playing friendlies with him @ Berlin calling )
Also, grabs are not a must, unless you are a tech chase meister like Jeff, and you got a 99.9% chance of killing. So its your own choise to go for a grab or an attack. When someone shields, just grab ofcourse.
Other than that I did not noticed anything specificly.Maybe you have an other video against a person you had more trouble playing with?
anyway I hope this advice can get you further =)