Welcome! and nice pieces...I can tell you'll definitely like polymer clay
I made all these with sculpey...I just picked up my first pack of sculpey III ... so much more expensive than regular sculpey, who knows if I'll get buyers remorse
Since this is a new medium for you, it'll be important to know that there are differences between the brands and lines of polymer clay. Unfortunately, one of those differences has to do with the strength of baked clay in any thin or projecting areas, and original Sculpey (boxed) is definitely the worst... SuperSculpey (boxed) and Sculpey III are somewhat stronger, but almost all the other clay brands/lines will be much better.
Another difference between lines is how they handle, especially for making crisp detail and not distorting and getting fingerprints, etc... again those 3 Sculpeys are at the bottom of the list. Here's a general list of worst to best just for handling:
...Sculpey III, SuperSculpey (though it varies by box), CraftShop/BakeShop
...Kato Polyclay, FimoClassic
There are ways to "save" money and clay though even when making larger items...check out the info in these previous messages I wrote about that (some overlap):http://www.craftster.org/forum/index.php?topic=155163.msg1548395#msg1548395http://www.craftster.org/forum/index.php?topic=73664.msg1638472#msg1638472http://www.craftster.org/forum/index.php?topic=177119.msg1833985#msg1833985
Also, when making "projections" and thin areas especially with those Sculpeys, you'll probably want to use armatures inside or behind the clay to keep them from breaking:http://www.glassattic.com/polymer/armatures-perm.htm
(If you're interested, you can read about the various brands and lines of regular polymer clay and their characteristics on these pages of my site:http://www.glassattic.com/polymer/Characteristics.htmhttp://www.glassattic.com/polymer/sculpture.htm
...there are separate pages for metallic clays and translucent clays, and liquid clays as well)
I really love texturing, it's my favorite part of the whole process
Texturing (and stamping) are so cool, and can do so many visually interesting things. If you're interested in more on texturing in particular there are lots of ideas for texturing tools (including making them from clay or silicone, etc), and how textures can be made more dimensional visually, etc., on this page:http://www.glassattic.com/polymer/texturing.htm
You might like the Stamping page as well.
I've found that painting metal tones is my favorite thing to paint, so i'm trying to think of other metal trinkets I could make.
There are also really great and convincing ways to make faux-metal effects with polymer clay using metallic powders and waxes instead of purchasing metallic paints. You can also make your own metallic "paints" with metallic powders mixed into clear mediums.
If you want to read about those things, this page is a good place to start, and other pages will be suggested there for more detail on each:http://www.glassattic.com/polymer/Faux--many.htm
...click on Metals
Again welcome, and have fun!