Let's have a listen.
The Motteke! Sailor Fuku has had its share of remixes. =P
*That aside, you definitely have the basis down. Synths with some sort of lead, "stabs" on the "and" of each beat (one AND two AND three AND four AND...).
*The bass sound you've chosen distorts a great deal—while that's great for Hip Hop, it's NOT great for Eurobeat, a genre dependent on "cleaner" soundworlds.
*The synth riff is barely audible. While the standard synth riff sound IS based on Sawtooth patterns, they need to be more aggressive, almost rhythmic in tone. It's okay to have a softer-sounding synth (It KILLS me to type that sentence as a harder-synth-sound fan), but at least make it more prominent when it's taking its turn to shine. It's the riff that makes it Eurobeat, in most cases.
*The original song is in a major key; your background chords are minor. You managed to get away with this in a few cases, but it creates some dissonance in other spots which may or may not be what you intended.
*Consider having a higher-pitched sound on the "and" of each beat as well. You did well with that with the bass, but having a higher-pitched sound makes it more pronounced and is a highlight of Eurobeat as a genre.
*LOVE that little rhythmic dropout during the second riff. :3
I'd love to see what you do with a non-remix Eurobeat song. You clearly have the right audio equipment to make something fantastic, and have the basics of the genre down; just tighten a few genre-specific things down and make sure the major and minor keys are in alignment, and you'll be well on your way.
(BTW, if ever there were a great Eurobeat-ish remix of the Lucky Star theme, it'd be the Metabo Taisaku mix. The synths are piercing [just the way I like 'em], and contains that sort of silly energy that some of the best Eurobeat back in the day had.)
Well done.
