Paul McMillan Miniature Pennsylvania Landscape Painting Old Tree in Autumn Miniature 4"x 5" Image Oil on Panel No. 335 Sold. Paul McMillan miniature oil paintings have jewel like details with finely blended smooth surfaces that show a little brushwork. Each miniature painting has a guilded plaster frame made by the artist. 7.5" x 8.5"outside, x 1" thick.