Scenery: How to sculpt roses

Instructions here.

Sculpted elephant

Step by step photo guide here.

Sculpture: Disturbing version of The White Rabbit (Alice In Wonderland)

white rabbit sculpture by ~Miko-M on deviantART

Pac-Man ghosts and other figurines by Roy Ginat

Found in this gallery. Some are available in his Etsy store.

Super Sculpey vs Sculpey Firm

Raul shares his thoughts.

Sculpture: Fairy riding a mouse

Mouse Bait by ~pixiwillow on deviantART

Polymer Clay Pikimin Sculpture

pikmin by ~dashase on deviantART

Sith Witch Sculpture (Star Wars)

Sith Witch sculpture, sculpted out of Super Sculpey by Rey Hernandez.

Sculpture: Pyro figurine/candleholder (Team Fortress 2)

You can see more photos of the Pyro toy, including making of photos, here, and a few more custom figures by "Quasimodox" here.

Aves Epoxy Sculpt Tutorial

Lots of tips here, including reasons why you should use Aves Epoxy Sculpt instead of Super Sculpey.

Adorable Little Optimus Prime Sculpture

Made with super sculpey. Link.

Custom Action Figure: Aeon Flux (MTV Version)

Mostly made from a green stuff. More photos here.

How To: Sculpt frayed and torn cloth

Lots of detailed advice here.

Great comprehensive explanation of tools and techniques for customizing action figures

Link.

Sculpture: Galapagos Girl

Lots of photos here.

The merits of mixing Super Sculpey and Sculpey 3

A useful discussion here, including the suggestion that you buy a pasta machine to mix.

Customized Action Figure: Iron Man/M.O.D.O.K. Mashup

Zero G used a mixture or Super Sculpey and Milliput, around a core of aluminum foil.

Custom Action Figure: Ganon (Legend of Zelda The Wind Waker)

Click through for more photos.

How To: Sculpt with Greenstuff

Some very useful tips. For example:

By varying the ratio of blue to yellow, the properties of Greenstuff will be modified. Using more blue (hardener) in the mixture, the putty will cure faster and harder. Using more yellow (filler) will do the opposite, it will make the putty a softer blend that will take detail better but harden slower.

Custom Action Figure: Wraith (Marvel)

Underneath all that it's a Iceman action figure. Go here to see lots of in progress and finished photos. "Warrack" made the holster out of paper to get the shape right, and then covered the paper with Milliput.