It also says that when loading to push the ball down flush with muzzle and trim the excess patch or ticking, do you guys worry about this?
Yes. It doesn't need to be perfect, but it should be evenly cut. Anything in front of the ball can effect accuracy, and too much can grip your ramrod and back the ball off the powder (making your gun a pipe-bomb) as you pull it back out.
The lube should be evenly spread, but not so much that you can't see every fiber in the cotton. The best method is to lay the fabric on a sheet of glass and smear the lube across with a putty knife, leaving only what sticks in the weave. If you see globs or peaks of lube you have too much. With a grease lube like BB I either glob some on the patch and rub it in between my thumb and forefinger, or carry the lube in a tin and wipe the patch across the surface of the lube with my thumb and then squeege it across the edge of the tin. Only the barrel contact side of the patch needs lube.
Lately I have been using liquid oil & alcohol based lubes that I dip patching strips into and then let dry for days before use. You would be surprised how little lube you can get away with if it is evenly placed. Laying a cotton patch on your tongue for a few seconds dampens it well enough to be a lube. They don't need to be sopping and dripping, just moistened through.
If you get burned patches you have too little lube. Every rifle is a law unto itself, the only way to know yours is to experiment.
Make or buy yourself one or two of these and prepare the balls and patches at home. That's my preferred method. I carry a seven-holer for hunting of any type. When empty, it's easier to lay out everything on the ground or a stump and re-load the block instead of one at a time at the muzzle.