Oma

I purchased a painting of a boy holding a dog in one are and a broken pitcher in the other hand. His skin looks perfect, his hair is sticking up and I can see the strands of hair. At first glance one would think it was all painted in green, ( I call it my green painting.) The signature is hard to read but I think it says "Camil___ Bill_____") any ideas? I tried to take pic. but it reflected the light too much. If needed I can try again.