honestly i would make a tutorial but i'm so lazy and that probably wouldn't even be allowed.
to get a REALLY good tuck, like, bikini tuck(it is possible) you gotta use tape.
Duct tape.
i'll try to type even though i'm not good with words but anyway,
You're gonna need two things.
toilet paper
and tape. medical works, but duct tape is best, i actually use both at the same time.
first thing you wanna do it cut out your strips of tape so they'll be ready to use. I use about 3 strips of medical tape and 1 strip of duct tape.
You don't want the strips to be too short, you want them to end at about your tail bone, so i say just make them long and snip off whatever is left once it's pulled back.
then you wrap your "part" in toilet paper, now this is really important lmao, unless you like the sensation of tape ripping off skin on that delicate area.
I've seen tucking videos where tgirls will wrap their part in TAPE! i'm like gurl was wrong witchu.
Use toilet paper, just wrap it up and get a small piece of tape to make sure it stays wrapped.
Then here comes the part where you have to push up the twins into the sockets that we all have. Trust me, you have them.
I think over time from tucking the sockets "stretch open" because it DOES become easier and a lot more comfortable to push them up there,
So just push them up, look in the mirror when they're pushed up, it should kind of look like you have a camel toe

obviously one goes on one side and the other goes on the other side, they're going to be above your part, where your pubic area is.
You wanna keep one hand under the twins make sure they do not fall down or slip back into the sack and with the other hand push your wrapped up part back to where your, ahem, anus, is.
and this next part is also important, you want to, while still making sure the twins don't fall down, reach around with your free hand and grab the excess skin from the now empty sack and PULL back as tight as you can with out hurting yourself.
Sort of use your thighs to make sure it all stays pulled back, you wanna make sure all the excessive stuff is pulled tight so the twins won't have anywhere to fall down to.
Next all you do is take one strip of tape, put it UNDER, not over, but under one of the twins and pull the strip of tape back between your buttcheeks to your tail bone.
do the same thing on the other side for the other twin.
and then take your third strip of tape and use that one for the middle!
Now the reason i use a final strip of duct tape is just to really make sure that your junk is SECURE and that beautiful tuck isn't going anywhere.
so i place in the middle, like where you put that third strip of tape, and you snatch it back nice and tight

and i use medical tape first, so it wont be as painful taking it all off since the duct tape would be on top of it.
Tucking takes practice but if you do all the steps right you'll be able to wear whatever you want, even a bikini pre-SRS.
http://i.imgur.com/QhsoEJi.jpghappy tucking, y'all