Kathy in stairs

I like the pose of her, the clothes and the background so i made a drawing
Canvas: ordinary cardboard A3
Pencil: Mechanical pencil 0.7(B i guess), blending done with fingers
Time: two weeks
Model: Kathy
Digitalization: scanned in 3 times, joined in Photoshop, increased a little the contrast


--I'm trying to improve my drawing techniques, i'm totally amateur!!, that's why I would really appreciate feedback and comments, maybe some helping tips ..out there... Thanks--