@Pappenheimer: The Plants from Loopix are great, i have them already. Thanks.

@Landixus and fogman: The overlay is not possible with the texture from the flowers, because the background from this textures have many different colors. I think i have to colored the textures new....

@ Machinery_Frank: Ok, i understand that you don`t flip the normals, it is also not so much work to do it by myself. But why you don`t can bring the textures (from the Flowers_1) with the background with alpha = 0 or color 0,0,0 (for overlay) that i dont`understand.
But i say it here again: I buy a lot of others models from you, and they are great!!! Thanks