My turn. :D
-Not a bad intro there, it sounds quite nice.
-Speaking of the intro, that piano. Sounds. Great. It has a lot of depth to it, and a fairly realistic quality of the 'weight' in the keys. Obviously it could be improved, and isn't quite 'real', but it's pretty close for a loop.
-I like the drums, there's just one thing I'd comment on with it, which I'll get to in my DA STUFF-THAT-CAN-BE-IMPROVED section. ...also, you're getting your little brother to drum? Sweeet.
-The guitar sounds pretty good, and is more realistic than anything I could get. :P
-Tune's nice, I suppose. Definitely not bad to listen to, though it's not your best one.
-Alright, since I mentioned it before, I'll poke it immediately. The drums could use a few fills - don't forget those toms or ride cymbal rolls!
-I probably wouldn't have noticed the mixing issues on the bass if it hadn't been mentioned below, but yeah, they're right. There is something odd about the bass' mixing. I personally don't think it's the reverb. It might be something else I'll mention next.
-Also about the bass. The rhythms and notes seem to be slightly off. Some of the notes let go slightly later than they should, and some of the pitches are slightly off, not sure whether you intended to detune it, but whatever's going on there, it doesn't quite work.
-The strings could use a little bit more depth, and they move a little bit too fast for strings. Might be better to have a solo string like the flute doing the tune with the larger strings in the background like the guitar.
-Yes, I know it's pop, shush. Even pop can have a secondary section and another tune. This sounds nice, and I know you kept it short because there isn't another section in it (not because you only worked on it for three hours, don't tell me that's the reason. <.<). But seriously, could have at least had a little 10-15 second break to a few different chords and a different tune.
-Not sure whether the flute should have been in there. It sounds cool, yes, but it's not quite fitting for a 'pop' song. Granted, I know it's your style to do things differently, and I'd probably do it to, but still. This only applies if you were really looking for the 'pop' feel.
-If you're looking for a better bass, the basses in the default Kontakt library work great. Also, there are the Sytrus basses (some other preset packs come with pretty sweet basses), and one default FL instrument called "BooBass" that generally is pretty good. They're not the most realistic, but they are good bass sounds.
Overall: Good, good, good, could be improved a lot, but still better than most of the pop stuff I hear. I honestly don't like lyrics that much in songs unless they're done really, REALLY well.
Okay, bye now! I must be getting on the plane to Australia~ I'll be sure to work on more music on the flight there, so hopefully I'll have enough to at least preview up here.