I skinny arms & legs with big belly. My head is skinny too. I would like to have more fat/meat on face and get rid off from my belly. Please advise?

Body composition. This is an area that is impacted by genetics, diet, and exercise. There is little to be done with the genes, so you should focus on the other areas. Strengthening exercises while eating a diet that will support a resistance based exercise regimen will help recompose your body.