A majestic pencil double portrait of two adult Highland cattle standing side by side, executed with impressive scale on white background using graphite. Draw both animals with their magnificent long horns prominently displayed, each set with unique curves and character, showing the texture of horn material with growth rings and weathered surfaces. Their massive shaggy coats should be rendered in incredible detail with thousands of individual hair strokes creating realistic texture, showing how the coat parts naturally, hangs in thick curtains along their sides, and creates the distinctive long fringe that nearly obscures their faces. One cow could be looking directly at viewer with a gentle expression, while the other is in profile showing the full impressive curve of horns. Include authentic breed characteristics like their broad muzzles, sturdy legs with feathered lower portions where long hair covers the hooves, and powerful build. Add details like one cow nuzzling or leaning slightly toward the other suggesting companionship. The background could feature classic Highland scenery with misty mountains rendered in soft atmospheric perspective, ancient gnarled trees with detailed bark, rocky terrain with moss and lichen, and native Scottish flora. Use masterful shading to distinguish between the two animals while creating overall harmony. This commanding piece should showcase the impressive presence of these iconic cattle.