Ooh I'm asian too
While my lashes aren't completely sparse, they are fairly short (compared to everyone else here) because afterall... I'm asian
For the clumping problem... the MAC fan masaca brush REALLY helps! It's amazing lol. I can't live without it if I'm going to use mascara- if just to separate the clumps without taking away the extra length the mascara gave me
For mascara... I use Blinc (Kiss me)... but the main reason I use that is because it doesn't smudge on me -ever-, and that's the main thing I go for lol. It's not bad though. And it seems to make my lashes curl up a bit more than they naturally do (since I don't curl them).
Perhaps you should try it out?
Another thing may be how you're applying your mascara. I don't know about you, but this reaally makes a difference for me! (Especially with the Blinc mascara, since it dries to a 'springy' kind of consistency)!
What you do is... get right down into the roots of your lashes, and get your wand in there. Then HOLD it there for maybe 5-10 seconds, and as you do that, kind of... wiggle... your wand horizontally, like you're making a 'Z' shape- slightly. Hold it a little more, then brush upwards along the length of your lashes like you normally would do, without taking the wand away
Annd of course, repeat as needed. Maybe you do this already
But I know a lot of my asian friends don't- they just 'brush' their lashes with the wand, and forget about the roots, and the mascara just seems to weigh down their lashes even more!
If that stuff doesn't work, then I agree with the others too! Check out snowkei's tutorials, and the difference between wearing, and not wearing her falsies! She looks AMAZING with them on! It's really cool!
Sorry for the long post -__-