"Steve Harris's online draughts allows you to play draughts/checkers against players from all around the world or just a straight-forward 2 player game.
The game includes elements such as chatting and ranking of players. You can accept or decline challenges, host your own game or join another game.
Quitting mid-game will mean you automatically lose the game thus prevent cheating.
See if you can become a Grand Master!"
Is this description OK, could I do it better?
Your description is okay, but it could be worded better, I think. I'd try something more like this:
"Steve Harris's Online Draughts lets you play draughts (known as checkers in the U.S.) against opponents from all over the world! Host a game and send out challenges to other players. The game also features online ranking and in-game chat. Quitting mid-game will always result in a loss to keep cheating to a minimum. It's free to download and play!"
Putting up a page for the program will also go a long way in getting people to try it!
The graphics are serviceable, but could use some improvement. I think you're going for a sophisticated-type look, but for my money I'd prefer to see something a little more understated. All the different textures and marbling just distracts the eye. If I'm playing checkers online, I want everything to be very clean-looking.
I like the look of the board in this game, for example:
The entire motif is actually a bit too tan. Everything is the same tone. There's no contrast. It's also quite difficult to make out the white text on there...
Sorry Guert, forgot to mention it's freeware for now
Regardless of the price (or lack thereof) you still need to be able to say what makes your game better than the so-many other online checkers games. Starting off, you're automatically at a disadvantage to established services due to lack of player base. You're probably also a bit less user-friendly because you require players to run (trust!) an executable, instead of just loading up some web page. So, to convince people to play your game, you need some aspect of it that's really not just equal to but clearly better than the current offerings.
Also, if it's just the game of checkers, and you're not famous, it's a bit odd to call it "Steve Harris's Online Draughts".
I think the fact that it's free is a big selling (heh!) point.