I find the trick with brisa lite is not to over work it, it does self level (yet it doesn't run into the cuticles)
When I first started I was taking forever and I found it really hard to get them perfect then 1 day it just clicked that I was trying too hard!
if you sculpt it look from every angle to make sure there are no low points if there is just touch a higher point with your brush and drag a 'string' into the low point, do this a couple of times, and leave it!!! it will smooth and self level
Also a point is that you dont swipe your brush down the nail like with a normal polish, you gently pulse your brush and pull and push product. If you go to the course with this in mind I think you will do a lot better