i made the snowman faces 2 years ago.
I made a video about this a few years ago also (one of the 100). Prob easier to redo the video to show the method.
1) Pick any image (tree, snowman, olaf). Size image to arounf 50x50. Pick images with just a few colors, our matrixes do not have that great a reolution. Exception to this is if you have a 30K channel P10 matrix, then you can do highe rresolution.
2) Make 10 versions of the file.
10 phonemes , each file is named so you know what phoneme it contains.
3) Start with background image and then pate eyes and mouths to each.
Here is an example of the 10 mouth phonemes from Pagayo and the snowman (Whcih i named tree for some reason 2 years ago). People who are more artistic than myself could make more images.