diff --git a/2021/sketch_2021_11_11a/sketch_2021_11_11a.png b/2021/sketch_2021_11_11a/sketch_2021_11_11a.png
new file mode 100644
index 00000000..6b130c49
Binary files /dev/null and b/2021/sketch_2021_11_11a/sketch_2021_11_11a.png differ