This is an example of sidewalk/chalk/art. A lot of the images i have seen are made to look 3 and realistic but only works from one angle and takes up so much space which turns out great, but with this one you could almost look at it from anywhere walking by and it would still work. I wish I was as creative as some of these people that see something as a light and sees another image it could turn into. 

Again with simple line that make shapes. I found this a nice simple clean image of two whales that is well balanced. it has smooth lines with a couple sharp point.  I like that the line spacing and thickness to  the lines that make the shading.  

I saw this Illustration and it reminded me of the exercise we where working on in class. It is 2D and you can see light and dark with the simple colors of blue and yellow I also like the illusion of the very long shadow on the person on the sidewalk making it look realistic 

I found this image on Pinterest. I found this a very clever way to use a barcode instead of the traditional way. You could only use this technique with certain images but i find that it works great with the zebras striped legs