Update file week10.md

docs/assignments/week10.md

@@ -107,6 +107,9 @@ Experimenting with fan brushes and ecoline.
 ![LINER](../images/week10/brush1.jpg){ width=1000 }
 
 Experimenting with kitchen sponge with cut-out shape of waves and screen printing ink with water.
+
+**Note:** The screen printing ink is a very thick mixture so adding water changes the textures a lot.
+
 ![LINER](../images/week10/sponge.jpg){ width=1000 }
 
 ![LINER](../images/week10/sponge2.jpg){ width=1000 }