I would go back and sand the parts you put naval jelly on, it removes rust, not what you want, the LMF will remove the shine guaranteed.
It is almost impossible to not overlap the application of LMF at some point and get a coppery streak. I have even seen where some folk get worried about this, sand everything off and start over. Not to worry, the coppery streaks will go away with future applications and blend in perfectly.
Here is my last barrel after one application and one night out in the N/W Alabama humidity under a roofed archery target, I think it was raining that night, I have found to never let a drop of dew or rain land on your metal, it will leave a streak and be hard to deal with. I carded off the red rust with a square of course blue jean material, put on another coat of LMF and left it outside for another night. From that point on all I did was let it rust in my shop and card it a couple times a day until I liked the color.
I always start my browning on a rainy day with high humidity outside. Where I live you won't have to wait more than two weeks for the right conditions, I do the browning and stock finishing at the same time.
Here is my rusting setup.
I have a friend who was building a Kibler (his first gun), he built a rusting box and did the hot shower thing with real blotchy results. I told him to sand everything off, apply the LMF again and hang his barrel out in the garage overnight with the doors open. (south Alabama), success!
I have found the little parts are so much easier to brown than the barrel, When I showed these parts years ago some jerk on here soundly scolded me for making them TOO brown and said they should be no darker than plumb brown. I guess he failed to notice that I was making a gun to suit me and certainly not him.
I like the color, I think I took this picture after I heated and oiled these parts.
Looks good on my rifle, at least to me.