One of the great things about Jams is that there are many different methods for putting them on! You need four main ingredients: clean nails, heat, pressure, and heat. And then you can find your own style of putting them on that works best for you. This is how I do it.
Phase One:
Get the wraps cut to size.
I like to cut out all of the nails that I'm going to use at once. I'll often do this in the morning, then apply them at night.
The first thing you need to do is to pick the wrap that's the right size for your nail. Pick the one that is slightly smaller than your nail. You want a little bit of a gap between the Jam and your skin on the sides.
Next, put some tape on your nail and mark the beginning and end of your nail. Give yourself a little bit of extra length in case you have to trim a little off to get it the right shape.
I like to get a precise length because that means I have more left over in the middle!
Put the tape on the wrap that you've chosen for that nail. Normally, I would line up the bottom line with the bottom of the wrap, but I know I need to cut most of that bottom curve off for my thumb.
Do not put the tape on the front side of the wraps! You might wind up pulling the wraps off the backing, and you don't want that.
Now, take out your scissors and cut the wrap out. You will want curved nail scissors for all of the trimming you'll do to the wraps (next step). They make it a lot easier to get smooth curves at the cuticle end.
After cutting out the wrap, peel the tape off the backing, and hold the wrap up to your nail. Don't peel off the backing! Look at the wrap carefully and determine how closely it matches the shape of your nail bed. If it doesn't match, make a mental note of the parts that need to be trimmed.
Trim the wrap to the shape of your nail. Trim as little as possible, and only do it if you have to. It's really easy to overdo it! Keep trimming and comparing until it's just right. (I held the wrap in place with tape for this photo - you can see how the bottom of the wrap now matches my nail bed).
Repeat for the rest of your nails.
And there you go! you have all of your nails cut out and ready to stick on! You can either put them on now, or I sometimes put mine in a ziploc bag and put them on later in the day.
Phase Two:
Apply the Jams!
It's best to do this at night, after all the chores are done. The adhesive needs a little time to set and become fully waterproof. If you wash the dishes or go swimming too soon after you apply your wraps, they can come off. If you apply them at night, they set overnight and you're ready to go in the morning!
First, push back your cuticles. All of them. And make sure you get rid of the invisible cuticles. If you don't, you'll wind up applying the wraps to your skin, and they will not stick (or not for long).
Wipe down your nails with rubbing alcohol to get them nice and dry and clean.
You can also use nail polish remover for this, but make sure it's the kind without conditioners in it. Conditioners will make your application worse!
Take the wrap you've cut out for that finger and use tweezers to peel the backing off.
Never touch the adhesive side with your fingers! Oils from your skin will neutralize the adhesive (which is why you just cleaned your nails with rubbing alcohol).
Heat the wrap up. Most wraps need 5-7 seconds of heat. Heat them until they look a little soft and flimsy.
And yes, I'm holding my wrap up to a mug. That's my heat source. I fill a mug with boiled water, and it gets nice and hot and works pretty well! Make sure you don't stick the adhesive side to it, though :p
I've found that I have much smoother applications if I really heat the wrap up well.
I forgot to get a picture of this with my thumb...but now, take the heated wrap and place it on your nail. Get it as close to your cuticle as you can. And be aware that you can't peel it up after you press it on. Make sure the wrap does not overlap with your skin. If you do wind up having the wrap extend over your skin when you press it down, take your nail scissors and cut that part off.
Firmly press the wrap all around your nail, especially the edges, to get it sealed to your nail. Then push your finger into a plastic bag (like a ziploc bag). This helps provide pressure, especially at the tips.
With your nail in the bag, hold it to a hot rice baggie (or a microwavable teddy bear, in this case). You can make something for this pretty easily by filling an old, clean cotton sock with rice. Get it hot in the microwave, but not so hot that it starts burning!
And there you go! You have a wrap sealed to your nail! Do this for the rest of them.
One hand done!
Let the wraps cool a little bit before trimming the ends. They shrink as they cool, so you may have a white line at your tips if you trim them too soon and they shrink down.
After they've cooled a little, file them down. Some people like to clip them, but it works better for me if I file them. I get a smoother finish. And I file at a 45° angle in a downward direction.
Keep filing until the excess of the wrap comes off.
You're done! Now, just a word about sizing. See how I have a gap between my wrap and the edge of my fingernail in these two pictures? That's actually perfect. You'll never notice it unless you have your nails two inches from your nose, and you'll have a much smoother, less bubbly/ripply application than you would if the wraps were too big.