Colorful Hand Signed Lithograph by Photography Artist, Martin Roberts entitled "Life is One Step At A Time" 18" x 24" with Mat. Martin Roberts is one of the most collected and "owned" artists in the country.  His work is appealing with incredible detail because he works in mixed-media.  Roberts layers acrylics, watercolors and oil paints to create exquisite, three dimensional works with cascading flowers and textured covered walls.