Portrait drawing

Happy weekend guys,this is my new drawing,an old man with hat and a big mustache, I love drawing old people because of the intricacy in drawing wrinkled skin,the little faint lines that are almost invisible,combined together gives the effect,they may seem unnecessary while you want to draw but little things matters in this case.

I drew this piece with brown,orange,green and black ballpoint pen, I used smudging techniques to shades