It doesn't take a spectacular paintjob to make your army look good. It just needs to look good enough, and it's possible for Thousand Sons, too.
How to Paint Everything – Thousand Sons Chaos Space Marines
Painted my first miniature ever! Any tips/tricks for painting Thousand Sons for future reference? : r/ThousandSons
23 Most Famous Artworks at the Vatican - The Roman Guy
Warhammer 40k artwork — Thousand Sons by fat-elf
HOW TO PAINT THOUSAND SONS: A Step-By-Step Guide
How to Paint Everything – Thousand Sons Chaos Space Marines
Vaeroun Miniatures
Leonardo da Vinci's brilliance endures 500 years after his death
Jan van Scorel's Crucifixion for the Oude Kerk, Amsterdam: The finest painting in all of the regions of Flanders - Journal of Historians of Netherlandish Art