Hiya, to me they are too thick on the free edge, should be about 1 credit card thickness, and 2 for your apex, that is what I always aim for, and was taught, and I also think they look a bit thick round the cuticle area too, should flow nicely like a natural nail, not have a hump, I have a natural high arch on my nails too and a deep C-curve, but I find if I stick to the above rule for myself they look fine, I'd also thin out the sidewalls otherwise they look bulky, can lift