There are so many problems with this series.
The voice acting is terrible, its flat with no highs or lows. Everybody just talks with no emphasis on important words, or with any personality, its just completely flat and boring to listen to. Get a decent microphone and learn how to put emphasis into your dialogue.
The backgrounds tend to be really low res bitmaps, with alot of artifacting and pixelation, leaving them ugly to look at. Learn how to properly compress your backgrounds, or better yet, make vector backgrounds.
And last of all the animation, much like the voice acting is completely flat and uninspired. Theres some fake 3D in there, but it comes accross as cheap. The character models are ugly and disjointed. The art direction lakes the nostalgia of the official Ocarina of Time art, or the elogance of the official Twilight Princess art. Its just a boring anime based style with little to no personality. Try learning some frame by frame and teaching yourself about what camera angles are interesting. Theres more to it then just front on and side on.
The writing is also incredibly juvenile and unrealistic.
Sorry for coming accross so negative, but this is not an example of how to make a good zelda flash. And its score is incredibly bloated.