I am working on a shader setup where a transparent yellow texture should go under a black text texture. I tried using a mix shader to put one on top of the other but I get something like above, where you get a 50/50 mix of the two. I was hoping to get 100/100 of both textures on the object, is there any way to do this? I'm not sure if a mix shader is the right node to use for this.
Node setup:

