We have seen quite a few illustrations with the low poly style, it looks like a very difficult technique but Breno Bitencourt put together a very complete Photoshop tutorial showing the process, including a video. I will really give it a try and now you have the chance to try to, check it out.
Here I'll show you step-by-step how to create a stylish low-poly portrait in Illustrator and Photoshop. The secret to creating works in this style is working from the best reference photos – and first off Breno reveals how to capture these (using himself as a model). He then reveals how to work these up in Photoshop, then create a vector version in Illustrator.
Breno Bitencourt is a graphic designer from Brazil specialized at logo design, as well as corporate identity that works with clients globally. For more information about Breno visit https://www.behance.net/Bitencourt