problem with train plz help

hi Im trying to make some new textures like different flowers I could make them,but they weren't as good as Unity grass. how can i make them like Unity grass?? plz help and discribe details to me. ps. I work with photoshop tnx

  1. Search the internet for textures or images. (e.g. CG Textures)

  2. Search the internet for Photoshop tutorials regarding alpha channels, texture painting ... (e.g. Smashing Magazine Tutorials)

  3. Take a look at soulzero's answer.

Are you asking how to use "Alpha Blending" If so Check here