Here’s a nice photo tutorial on modeling desert wadis.
Modeling
Making Pirate Ships
Here’s a nice photo tutorial on making pirate ships and the like.
Star Mats For X Wing Miniatures Game
The X Wing miniatures tend to slide all over table tops, so you definitely need a mat. Here’s a tutorial on making one out of felt.
Making Trees From Bottle Brushes
Here’s a nice tutorial on making trees from bottle brushes.