Kat Von D has very heavy coverage...don't need a lot! What are you using to apply the NARS foundation? It's meant to be used with fingers (Francois Nars is all about this) or a BeautyBlender works well too.
I work for Sephora so I've been able to play around with it and it really does look amazing after using the BeautyBlender
I work for Sephora so I've been able to play around with it and it really does look amazing after using the BeautyBlender