Giant Pictures - Photoshop Pix
Giant Taranula pictures - / You've got the burger and drink reflections but I think would look better with some for the spiders, / reflections in the shiny counter top might sell it better. 
Giant Grasshopper pictures - 
Giant Grasshopper images - / Quality composition and blending. Love thge yellow color match of the hopper and truck.
Giant Bug President pictures - Let's bug the White House... / Could the stars on the flag do with a touch up.
Giant Flea pictures - 
Giant House Fly pictures - Common house fly grows larger after finding a new food source, Asian police officers...
U.S. Oil Giants pictures - story Billions of dollars were wiped off the share value of ConocoPhillips and Exxon. / News Link / Please don't use quote marks in the title of your image. It messes up the database of the contest.
Giant Spider pictures - / Fair work but I would make the top and the bottom line not strictly horizontal for more realism.
Giant Bug Flight pictures - / I hope someone filled the windshield washer fluid.
Giant Moth pictures - Hiding / , a good one. Might wish to blur the man just a bit to match the rest.