Thank you, that video cleared it up. :)

Hi Awais! Because for step five in Adobe Illustrator we don't need to highlight any part of the building. See the next lesson (Finishing our final steps, 5 an 6) https://thinkparametric.com/courses/creating-conceptual-architectural-diagrams/videos/162 to see what I mean. We're going to draw an arrow in that diagram only. Cheers!