Alright, just some things.
Too much up smash. It leaves you vulnerable and is very hard to hit if you're opponent knows it's coming. The other smashes are much more effective for kills unless you're reading your opponent very well.
Get more aggressive with edge guarding. I noticed you were just standing on the stage charging smashes or using PK Fire the majority of the time. Olimar's main weakness is his recovery, capitalize and chase him off the stage with aerials. Don't forget to edge hog.
Sometimes you would leave pikmin on you for quite a while, just remember one forward/neutral air gets rid of all the pikmin on you.
These were the main problems I saw, everything else was pretty good, although there was a tad too much PK Thunder for my taste.