I am currently texturing a wooden toy cow. I am using a coloured tongue image which is being UV mapped onto my head object. I want the colour to remain so I chose Diffuse Colour as the image layers effect. However every other part of the head is washed with a white colour which blocks out the colour of textures below. The image is a Targa and I need everything apart from the tongue to be transparent.
I have tried all the layer effects and can't get the look I need. Should I save the tongue image as something other than Targa?
Any thoughts welcome.