How i can made a good photo of a miniature ?
With the camera you have at home, a tripod and convenient lighting. You do not need nothing fancy/expensive to make nice photos for the web (or even some publications). Remember to always set your white balance (in order to get decent colour rendition), use a small f-stop (in order to have sufficient depth of field; if your camera does not allow manual setting of this parameter, use landscape mode; you can try the macro mode, but usually doesn't use a small f-stop and consequently has shallow DoF) and use the timer delay on your camera, so you do not induce shaking when pressing the button to take the picture.
The most important part is probably lighting and you can use things you already have at home (one or two desk lamps, with similar lamps are usually ok). Don't place them to close to the mini, otherwise you'll get strong shadows.
And experiment, it's cheap to experiment with digital! And I'm sure you'll be able to find more informations on other threads here in CMON forums.
I hope this will help you.
Cheers
Marco Preto