set yourself up some bunkers then put some targets (pots on pole is a good idea or better yet buckets) in the lanes between the bunkers.
then starting from the flag base with your marker as you would in a game, break out to a few different places seeing how many targets you can spray on the way in.......for example break to a back corner whilst emptying a hopper down a lane, if you are hitting a bucket on a pole, a player wouldnt stand a chance.
then try it breaking to the 50 etc!
another good one to practace on your own is potting up...daft as it sounds but how many players do you know that can keep fireing and pot up at the same time....i know i can do it!
put yourself in a bunker, throw a beam of paint at a target (a bunker is fine as it simulates keeping a player in) and try to pot up with without letting up or taking your eye off the target for too long.
3rd idea...practace wrapping bunkers. put yourself in a nice bunker and have 2 target bunkers a distance apart. rattle one then keeping the paint their pop out for a look at the 2nd, snap a couple of shots and then switch back to the first whilst getting back in cover.....after a few goes you should be hitting the 2nd bunker and a few more you should be tagging the player behind it looking the wrong way!
4th idea...i like this one...picked up the idea after watching panic attack at campaign! people always say dont play over the top of bunkers and they are right most of the time BUT its also a nice way to catch people off guard.....set yourself up in a bunker with targets behind and to one side of other bunkers, now pop up from behind your bunker and snap shoot at one of the targets but FAST you will only get a split second to get your shot in in a game, but shooting from where people wont expect you to appear from can be brutal in a game...also try mixing this idea with pinning another bunker....so come out the side of your cover, rattle a bunker then quickly stand, spin on another target then get back in cover and back on the first target.
heheh i could go on all day! i do a lot of practice at home in the house....peeking out round corners, snapping at the tv! drives the misses mad! hehe i even snap out round corners at work...with what ever i have in my hand a marker!