If you have the texture that you want set as a MATERIAL file, and it is in "my objects" folder, you can go into the game and into "Object Maker". Load the house, and then go to the second tab. One bar should be labeled Material. Then you can plug in the material you want.
It usually works like this...
rockMat5
WaterMat
FXMat/Bark
If you don't know what yours is, open it on notepad, and it should tell you.
That's basically everything you need to mess with objects.
Particles...they're tricky. Don't EVER let particle files out of the folder you find them in. EVER. Or else, FH will refuse to play.
I'm not sure how to create new particles, but I know if you edit a picture, you can change how the weather or star aura looks and so forth. You can even make star aura a weather if yo really want to.
If you need anything else, let me know.
