Adam Oehlers is a British illustrator, concept artist and character designer whose work carries a feeling of his admiration for the Golden Age illustrators.
Most of the illustration on his website is in a fantasy vein, with wonderfully rendered forest scenes, animals and plant details. He makes effective use of muted, limited palettes, giving the work a coherence and sense of subtlety.
I particularly enjoy his use of repeated natural forms, like leaves, tree trunks or butterflies, as components of suggested patterns, with a bit of an Art Nouveau sensibility.
In addition to illustration, you can find on his blog examples of animated music videos, as well as both prints and original art for sale in his shop.
You can also find additional examples of his work on Behance and Instagram.