...Well.
Red = I strongly think you should fix it.
[General]
Leave the Source field empty. For most Vocaloid maps Source is set to the song maker, or simply none. There's no need to set "Nico Nico Douga"
Timing is off. I'm getting BPM = 172.00 Offset = 1625. Since there's changes in BPM, please resnap and remake all the sliders to fit them to the new timing.
[Teto]
As this is your very first map, I'll give some suggestions and leave some comments rather than just saying remap... This diff is.. well full of squares. What's worse, they're just those un-transformed, boring squares. There's also a part (00:46:279 - 00:56:051), where all the circles are just repeatingly placed in the same square, in a quite random fashion.
Meanwhile, some streams, obviously too lengthy to be stacked, are stacked at one point. For example, 00:36:508 (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16), 00:40:696 (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16).
And those sliders from 02:22:602 to 02:25:394, I wonder if you got the idea from the old U.N.Owen is her by Reikin. True, that map WAS epic back in 2008 (it still is today in some ways though), but keep in mind that mapping DOES evolve. Using this in 2011 is just bad.
..Well I'm not picking everything out. In short, this diff is REALLY FAR from the quality of ranked map today, and I'm not going to mod it since that's just pointless effort. Please pay more attention to the good maps around you, learn from other ranked maps, and remap this when you really understand mapping.
[Neru]
00:15:568 (1,2,3) - left 2 grids
00:15:568 (1) - the second last control point is useless, delete it
00:16:964 (3) - the second control point is useless, delete it
00:46:279 (1) - I can see your intention, but the control points in middle do not make much difference. Just replace it with a plain straight slider
00:49:071 (1) - ^
...well this is not AS terrible as [Teto], but I can't say it's a good map either. imo you should start off using grid 3, and with distance snap on. You could adjust the settings to suit you more after you get more experienced, but with those settings it's much easier for a beginner to map. Please only turn off distance snap after you have got a clear sense of spacing.(imo you should always use grid 3/4, or grid snap off after you get experienced.
Sorry but I can't give you a star. If you really want one from me, please try to make some improvement, and post in my queue again when you think it's worth a mod (and of course when it's open). Though if I still think it's terrible I'll not post again in this thread.