Making Stamps
Stamps are not only easy to make, they're kind'a fun too! I made the below for certain things I needed done, and some were just learning what I was doing. It's not a learning process as in how do I make it, it's what do I make stamps from that's the learning process. You have to train your mind to look for the everyday things around you.

You also have to learn to think in negative and positive form. Take the example of the sponge below, I had to make a negative impression first, then after that dried, I needed to make a positive impression so when I applied this stamp, it would give me the indentions and holes that a sponge has, not bumps like what's in the negative form.
(This is a man-made sponge I am referring to by the way)
Try to make the stamp in a way that it can be used in smaller areas too, see below for examples of what I mean.
You can use a variety of mediums to make stamps, and in this case I made these out of Aves Apoxy Sculpt.
If you wanted, you could make these out of Super Sculpey too, but they wouldn't be as durable as epoxies would.

To shorten your time making stamps with epoxies, you can make the first impression with Super Sculpey, bake it, then make your impression out of Aves, omitting the epoxy's drying time in-between.
However you make yours, use your imagination to experiment and see what you can come up with, try combining textures, like hair and a sponge, positive AND negative, you'll get some good ones trying out different methods.
If you dropped a Super Sculpey piece, you'd probably end up breaking it, that's why I use epoxy for the stamps, I always tend to drop 'em, Super Sculpey will work fine for a while though.
This was taken from a dried kitchen sponge... Notice the bow,
I can rock it to make the impression on a smooth surface
. I
made a mold of the dried kitchen sponge, then made another
mold, that resulted in the negative mold above and on the right.
Same stamp, but from the top angle...
This is the top side of the stamp above, I just hold it by it's edges and rock it over the Sculpey's smooth surface below. This stamp is made from a leaf, I made an impression, then turned it, and made another, that created a more detailed impression. This is used to make wrinkles as in a leathery surface.
This is the same curved "leaf" stamp, it's the top side showing the handle. This stamp has a handle, also, notice the curved shape that can be used to rock side-to-side on a flat like surface. This is in negative form.
Same as the above right, it's a stamp of my hair,I stuck it to my head to make it.
It's got a lot of residue Sculpey on it in this image though...
Positive and negative form... I made the stamps eye shaped to be able to get into smaller areas. These are all rounded so I can "rock it" when I apply it.
Here's the handle I just gobbed on, it doesn't have to be neat in appearance. This is another sponge impression I did, it will make an indention when it's pressed into the Super Sculpey.
This shows a (blurry) shot of what I made, I just poked random holes into the drying Aves Apoxy, I always let it get to it's firm stage before I do anything.
This particular stamp will leave raised bumps on your clay.
This is a side shot of the stamp to the left, I use an aluminum wire (12 ga.) to make a handle. Note that I also had a handle already on this one, and later decided to add the wire handle, so it's never too late to change your mind.
I have no idea what I made this texture from, but as you can probably see, it can be used in lots of ways to make skin, rock, or anything you set your mind to. This is a stamp made from pressing it into a OLD horsehair brush I have. This will leave a raised impression on your clay.
I made this out of a leaf...
Similar design, different pattern.
Here's some examples of some of the above, and, some are with more than one stamp used.