Blue Roses

Originally started as a gift for a friend, turned to be a gift for a lover, which was the same person. Blue roses, she wanted them blue so I made them that color. A lot of thought was put into these and color detail as well. But there are flaws in it, quite a lot of them. Can you find them all? Can you say "Where is Waldo?" -chuckles-

Time: 10 hours
Stuff used: 2H pencil, Pink eraser, Notebook with some good paper in it, ink for the outline and some of the crappiest shading, and colored pencils