i'm doing my assignment but i have a problem.

i'm making a coral. it has UV map image texture and i spread it out some points with geometry node on the surface of the mesh 

and i wanted to apply my UV texture to Points 
for instance, Yellow point on the position of the UV map painted with yellow parts
but i couldn't do what i expect with set material node
can you guys help me? 
i attached my screen image 
[![screenshot][1]][1]


  [1]: https://i.sstatic.net/z2Hmj.jpg