diff --git a/content/assignments/spinning-and-blinking/submission.md b/content/assignments/spinning-and-blinking/submission.md
index d692b76..db52e0e 100644
--- a/content/assignments/spinning-and-blinking/submission.md
+++ b/content/assignments/spinning-and-blinking/submission.md
@@ -7,3 +7,6 @@ weight: 3
 
 1. Completed code.
 1. Video of motor sweep named `submission.*` placed in root of this repository.
+(If your video is small enough, upload it directly. If it's too large, upload a
+link to the video wherever you upload it and put the link in the submission file,
+i.e. submission.txt. Make sure we have permission to view it!)