Update file week04.md

docs/assignments/week04.md

@@ -178,6 +178,8 @@ Dutch Wool | Animal Fiber | High| High | High | Medium | < 30°C
 
  ![colours](../images/week04/46.jpg){ width=1000}
 
+Normally the original dye colour from red cabbage is purple, but I got a blue. So I looked up some recipes to figure out the reason. I think the temperature was too high when I was making the dye bath and the cabbage got cooked, which changed the dye colour. 
+
 **Fabric**
 
 ![colours](../images/week04/416.jpg){ width=1000}
@@ -186,11 +188,14 @@ Dutch Wool | Animal Fiber | High| High | High | Medium | < 30°C
 
  _Recipes_:[Zuahaza](https://www.zuahaza.com/journal/natural-dyeing-with-red-cabbage)
 
+Okayyy, so I didn't get any patterns from the stitchings I did:(  Here are some possible reasons:
 
+1. Linen doesn't take in a lot of pigments and the colours are too light to show obvious patterns
+2. I used cotton thread when stitching.
+3. I didn't pull the threads tight enough.
 
 
 ## **Pigment**
-
 To not waste any dye we created pigments from the dye baths.
 
 ![dye](../images/week04/48.jpg){ width=1000}