when i started painting i didnt thin my paints but iv started now and improved massivly and put layers of thin paint on instead of dumping loads of thickpaint on to cover undercoat and dont put big white circles for eyes just give the face a brown wash and it will look better -- good luck
Thin your paints. Improve pictures by cropping unused picture parts. DON'T use that silly word-writing again. Be patient and keep it up, your painting skills will enhance by time.