diff --git a/2021/sketch_2021_03_26a/sketch_2021_03_26a.png b/2021/sketch_2021_03_26a/sketch_2021_03_26a.png
new file mode 100644
index 00000000..ca4c42a6
Binary files /dev/null and b/2021/sketch_2021_03_26a/sketch_2021_03_26a.png differ