Insect Silhouettes Based Off Modern Day Predators

All the above silhouettes I made my taking photos of a Tiger, a Bear, an Eagle and a Wolf, lowering their opacity and drawing over then to make them appear more insect like. The idea behind this was if giant insects had lived to this time would they have evolved in similar shapes to modern day mammals and birds.
The one I feel drawn to the most at the moment is the bear design because of the way the animal is posed and I want to see how an insect of that size would look and move.

Bibliography:
http://www.arkive.org/polar-bear/ursus-maritimus/
https://s-media-cache-ak0.pinimg.com/originals/bf/7e/d0/bf7ed044dbefc82248b553d0ce8dc5c6.jpg
http://animalia-life.com/image.php?pic=/data_images/eagles/eagles9.jpg
http://rivertonradio.com/wp-content/uploads/2011/03/Gray-wolf-walking-in-snow.jpg