just a little bright, this is countered by the tga that has the _d.tga naming make it rgb "red, green,blue" each color will represent that underlying bump map "stone,snow,sand" then add a alpha chanel in that alpha chanel add a copy of your grey scale "height map" be sure to adjust the white and black colors to a more grey. you do not want them solid black or white cause those areas will show bright or dark.
a tumble weed. make a bush keep it low polly add a rotation point to it set it to rotate all the time. then you can have mappers wac that sucker all over the place,
or what i would probably does is give it the ai function to chase players hurting them when they get hit. it will allso twitch around as a ai. lots of things you can do with that idea.
heres some samples on the terrain brightness
heres a before and after
sry but there the best i have laying around