Creating low poly portraits are fairly simple. The main reason it takes a long time is because we keep repeating steps and it's just a long process to go through. First you take a portrait of someone . If your portrait is symmetrical then you only have to do one half of it, and afterwards you can copy and flip it to the other side. With the line tool, you trace the outline of your head in a bright color (like red). Make sure you have the grid on and try to make all of your lines start and end on a line in the grid. Then you start making triangles. Note that more detailed parts of your face should probably have smaller triangles (eyes, nose, mouth), and the bigger areas should have bigger triangles (skin and hair). Once everything is in triangles, you use the polygonal lasso tool. You select a triangle and go Filter-Blur-Average to change the triangle to a solid color. You do that for every triangle. Afterwards you flip the half and you have the full face!
My Poly-1 and Poly-2 image are very different. My first poly is very flat, I personally think it looks like a cyborg. The second poly is a little more artistic and creative. With the second poly, we didn't have to outline and we just got straight to making triangles and filling them in. We also got to pick the color we wanted so it got to be more creative and some parts of the image get to stand out more. Although with outlining, it is definitely a safer route because you can outline every feature and change it if you want to. The second poly went a little faster and you got to be more creative about where the triangles went and what color they are. One thing to be aware of was not making gaps and making appropriately sized triangles.