EDIT: Ok so there's a small mistake in the model. You may notice that the arm has little bits of colour on the sides rather than being all white. Here are the 4 STEPS to fix it: STEP 1: Follow through the tutorial up until 8:59 STEP 2: Locate the two white flaps that point upwards and REVERSE FOLD them downwards STEP 3: Continue with the model. MAKE SURE that the two white flaps are incorporated into the open sinks done at 9:48 STEP 4: Once you have reached 10:26, skip to 11:51 and continue on with the model Hope this helps!