3D logo . plz help me

[kos]

this is my prob , dont know why, but the back side is red and not the front like "the keeper" had shown it on his pictures .

its german , cuz i am german but plz help me

 

[John1]

I don't know the tutorial, but did you try a different blending mode?

 

[kos]

ty

 

[kos]

next prob :{
can't paint the black part

please THE KEEPER help me :{