Nicole Rebbert is a German hobbyist artist who generally works with traditional media. She uses a combination of mediums to create her artwork, usually coloured pencil, Copic Ciao marker pens and ink. Her work, though done using traditional methods, resembles digital art which, I feel, is an effect that looks highly professional and takes a lot of skill.
She mostly draws people, often from films (e.g. Marvel films, Pirates of the Caribbean).
I came across her art on DeviantArt where she uses the username “Quelchii”, and was inspired by her art as it is done in similar mediums to what I use and has a highly realistic appearance which is a style of art I enjoy working in from time to time.
View her artwork here: http://quelchii.deviantart.com
(art belongs to Nicole Rebbert, found: http://quelchii.deviantart.com/art/Avengers-Age-of-Ultron-drawings-537338756)