Russ,
Antique finish can be tricky to apply,especally on a large surface.
The first spot you hit with the finish,if you don't blend it in, will look darker ,or different than the rest.
I've found better to apply it in circuler pattern, with alot of finish on your applicator.
Wtather it be a sponge or, I use clean white tee shirts.Then wipe off the excess, very quickly.
BUT, like Pete said, if you use a resist, like resoline or something like it, then you should have no splochy parts.
ALSO if your aniique finish is getting thick, from age then thin it with fiebings 'tan kote".that works good.
Don't forget, the trick is to apply it fast, so it don't get a chance to get "splochy". hope thats a word, lol.
I like using Fiebings antique finish,I like to use it in conjuction with resist, or dye.
But if you want to use just antique, practice & apply it fast.