Fastred's dream sketch 1

First sketch I did for Fastred's dream in "Where the Grass Grows Green: We May Yet Stand". [link]
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"In the dream he walked for a long time. He walked until the forest behind him had almost disappeared, and around him all was white. Then, suddenly, he saw in the middle of all the white a banner. It stood on its own, planted in the middle of the field. The banner was black against the snow. He could see no device on it.
He hurried towards it, his limbs lighter at the sight, still stumbling in the snow. For each step he took, the snow began to melt away, revealing the ground beneath. It was a battlefield. A great battle had been fought there, long ago, and what he thought had been rocks hidden by the snow to make him stumble, was the rotting corpses of all living things.
But in his dream he hurried past them, over them, as unable, now, to stop as he had been to turn back before. There, before him, the banner grew, and the snow disappeared as if it had never been. Above the sky grew darker, and the centre of the darkness lay above the banner.
In his dream he came to stand close to the banner, and beside it he saw a white horse. Greater, even, than Shadowfax it seemed to him; red nostrils, arched neck and flowing mane. He went no closer to it. He could see the banner clearly now; White Tree, Seven Stars. It was unfolded as in a great wind, but he could feel none.
He was not startled, for that is the manner of such dreams, to see a Man beside the banner. His face was turned away; Fastred could only see the back of his head with its dark hair. He was looking at one of the corpses on the ground, so intent on the body that he did not look up or stir. His stare drew Fastred in, led his sight to the corpse.
It was no corpse.
"It moved. Broken, beaten, blinded, maimed; it moved. It crawled in the mud; one mangled had lifted to ward off more harm. Or beg help.
'I cannot help,' the Man said. He turned towards me. 'I am already dead.'
"And in his face I see the same decay that marked the corpses in the field. His eyes were gone, and half his face was stripped of skin, on one cheek down to the bone. Worms crawled there, falling from his eyes instead of tears. I stared, until the one lying on the ground opened his mouth and screamed light.
"It poured from his mouth, and when the light fell on the ground, grass began to grow. The pale green of spring-plants spread, shooting up between the bodies and the broken shafts of spears. Before long, the darkness struck back. It fell upon the body of the man, pressing down on him to quell the light, whirling around us."

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I've drawn the White Tree with seven stars in it instead of banner, and forgot about the horse completely... But it was the part with the screaming light, and the fight between the darkness and the light, that I wanted to draw, so...
I'm working more on this motive, so I'll be posting different versions as I go along. This was a quick sketch to get the concept down.