London-based artist Mark Powell draws incredible portraits on the backs of envelopes using only a ballpoint pen (referred to ‘biro pens’ in England). You can find many more examples of Mark’s original work on his website and Flickr page.
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Resources

– Mark Powell Official Site
– Prints available on Society6
– Mark Powell on Flickr
– First spotted on Colossal