Create an image of Roboute Guilliman, the Primarch from Warhammer 40k

Create an image of Roboute Guilliman, the Primarch from Warhammer 40k, depicted in the whimsical, detailed, and organic art style of Hayao Miyazaki. The image should showcase Guilliman in his towering blue power armor, but with softer, hand-drawn lines, and warm, earthy tones typical of Miyazaki's films. The background should feature a lush, vibrant landscape with sprawling nature, perhaps with a hint of fantasy elements like floating islands or gentle, mystical creatures. Guilliman's expression should be contemplative, embodying both his strength as a warrior and his wisdom as a leader.