It LOOKS like you didn't get a complete coverage with the neat-lac. When it comes to things like basketweaves you must use something like a skeepskin to really get the neat-lac into the cracks.Use a fairly good amount on a scrap, wipe it across the lid and immediately start rubbing it in from all directions- circular, up, down, all over. It can't sit too long as you thought. It must dry.
If it stuck in the cracks in some places and not in others then you didn't get enough paste on it to begin with.
YOUR situation looks like you may have gotten too much on it in places as it didn't take on most of the cracks.
Remember, all that you are trying to do with the resist is to lightly coat the surface leather and allow the paste to invade the crevices.
SO>>>>>>> wet, DON"T SOAK, the scrap and scrape it across the lid and quickly and lightly cover the piece, let dry and proceed with the antique. GET HEAVY with the antique paste and REALLY RUB IT IN in all directions. I use a huge glob on my projects so that you can't see the leather while i smear it on! Wipes right off.
pete