all the tiny sigils all over the robes. Is that freehand?!?
Sigils on the winged guy are mostly Thousand Sons ones from the basic Chaos transfer sheet, with a few Word Bearers and Skitarii ones thrown in. Some are turned upside down. And on a few places there's a tiny freehand wiggling line, cross or tiny dots added in. But yeah, the white sigils are mostly transfers.