Finally I have uploaded another coffee painting after a long break. This time I didn't use white paint (acrylic or poster which I used in 'Bob' and 'Surviving the Streets') just to see the effect. I did the highlights of the beard by scratching but as I am not used to scratching yet, I have left a few holes which I hope won't be noticed (it will be all right when framed). I think the actual painting looks better than what I uploaded here. I hope to update (it was just taken by phone and not with good lighting) the photo when the painting is not as sticky as it is now.
...and I hope to make another one soon