Well... most advice here was good, but here's a run off of what you really gotta know:
1. Don't swallow stuff, even if they never ever find it, that was like the thing in the 70's when smuggling was all new.
2. Don't use containers/canisters/stashboxes or other hollowed out things... they CAN notice if a simple object can be seen through and will get suspicious if they can't see through it (like a deodorant can or a simple box)
3. Dog's arn't the thing anymore, so you don't need to worry about keeping it around you. Still a dog could be around, so tape it nicely with tape, not duct tape, simple transparent, but efficient tape.
4. Your best bet is always and will always be hiding stuff in no-no parts of your body. Here's a few: in your ass, vagina (both not that recommended), in your bra, next to your crotch (They ain't gonna grab you between your legs just like that and ask you what's down there).
DO NOT, and I can't emphasize this enough, hide stuff on the inside of your shirt/pants/hat, any other clothes you may have on or in your shoes! Stick to the no-no zones: in your bra (preferably get a push-up bra and hide the stuff in the extra space) or in your underwear (no g-string please), making sure that you secure them to these intimate accessories with top notch transparent tape (again, not duct tape!).
5. Make 100% sure that you give ALL metal objects to the scan and walk through the beepy gate 100% metal free. Seriously! No f*ckin metals (They beeped me once and I had some weed next to my crotch, they got all touchy and feely on me and still didn't find it, but still, it's best not to have any metals).
6. Don't take knives, scissors of any kind, toe nail clippers, guns, toy guns (they had me throw away my key chain 2inch gun toy!) or anything that remotely looks like any of these (I had a quartz crystal that they confused with a knife until i opened my bags and showed it).
7. The most important: BE POLITE, DON'T IN ANY WAY ACT SUSPICIOUS. EVEN A TWICH IS ENOUGH! If they do get to check you, act COOL, like you forgot a dime in your plants. COOPERATE!
Additional info: Check airport and airline policies to be sure you respect any and all of their demands, even if they sound totally stupid. Don't smell like booze. Have nice clothes on! For real, I never heard of a guy in a suite get busted...ever! Don't go all bein hippy-like, saying that the man is bringin you down! Act conformist!
Do not take your stash out in the plane's toilet, some actually have cameras!!! Take your stuff out when you've arrived at the airport, in a toilet or even better, at home if you can live with the discomfort.
This should be all you need to be 100% safe.
Again, I do not condone the breaking of international laws or use of hard drugs.
PS: after tightly wrapping your stuff with transparent tape, drip some essential oils (mint i find is strongest) on the tape so that any smell will be diverted, even for dogs. Don't overdo it, max 10 drops of really hard essential oil. This works great for weed, but might come in handy for you too.
PPS: Yes, Howard Marks is my hero.
. hahaha.