Ok sorry it wasnt up right away, full time work and school has got me swamped in "to do" lists. Anyway, I'll try and make this tut as clear as I can, it's a fairly simple project once you got the hang out it.
Things you will need
-printer or small cut outs from magazines, etc.
-sculptys bend and bake clay
-pasta machine or a rolling pin
-razor blade
-sharpened pencil, safety pin, or pen
-mod podge
-credit card or some sort of flat cardboard surface
-clear acrylic sealant
-jumprings, lobster claws, pliers, wire cutters, loose chain, and beads (basically have your jewelry box and tools ready)
-oven
-baking sheet and tin foil
ok first, print up some images and cut them out to a desireed shape, remember to print small, unless you want to make some serious bling.

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cupcakecultthis is a pasta machine, a rolling pin can flatten out the clay just fine, but can get lumpy, so i prefer using the pasta machine.

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cupcakecultWarm the clay by kneading it in your hands until it's nice and soft, then run it through the machine

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cupcakecultthen lay down your pancake of clay on a baking sheet covered in tin foil (unless you have a special clay only baking sheet, then no tin foil is necessary)

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cupcakeculttake your cut out design

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cupcakecultlay it flat on the clay like so

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cupcakecultnow use a razor blade to cut out your design

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cupcakecultwhen you're done it shoudl look something like this

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cupcakecultheart shapes, ovals, and sqaures are easy if you have a tough time cutting them out exactly. you can also use cookie cutters if you dont plan on using them on cookies ever
next, add little holes where your charm will attach to the chains of the necklace

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cupcakecultget a nice sheet full of them made and bake as directed

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cupcakecultonce they are done baking and have cooled, it's time to mod podge your images on them.
lay down a brushfull of mod podge on the charm

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cupcakecultlay down the paper design

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cupcakecultthen use a card to smooth out the air bubbles

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cupcakecultnow allow that to dry for a few minutes, then come back and lay a very thin coat of mod podge over it (too much and you will smear your design)
then when that first layer dries, give it more mod podge layers, and finish with a layer of clear acrylic sealant.

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cupcakecultbeware of dirty hands duyring mod podging, things like this can occur when you place down the design

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cupcakecultthen once your charms are ready, add them to lengths of chain and beads in a nifty design, if you dont know how to link chain and beads, here is a crummy paint tut using jewelry wire
purple=chain green=beads, black=jewelry wire

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cupcakecultjust make loops out of jewerly wire to attach the bead in the center to lengths of chain. twisting them off at the end will make them more sturdy.
adding rinestones like the red ones on this necklace to your completed charms adds a cute touch as well

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cupcakecultgood luck in your crafting, hope this tut helps!