Rainbow Dash with sunglasses that is a great motive! But to combine this with Fluttershy wearing sunglasses too that is the work of a genius. This to Ponies with cool looks on there faces makes a great impression on the viewer so it makes a grand wallpaper, because each time you see it you just feel the swag of the "Swag Sister" sharing their awesomeness with you. There are some points that will need some corrections to make this picture 20% cooler: the edge of the picture is to dark compared to the middle so the contrast of this draws attention away from the Ponies witch is not what we want, Fluttershy was placed in the center of the picture and she looks great there but she pushes away Rainbow Dash into the dark left corner and so it does not look like the Swag Sisters it looks like Swag Fluttershy and bye the way Rainbow Dash. These are just some minor problems the picture is still awesome. Well done!
Islandpony DATABP(Derpy and Twilight are best Ponies)
Very cool. I'm not well versed enough to do a proper critique, but if there's anything I could say, it's that although there is a slight guide showing that it is indeed Fluttershy's front left hoof wrapping around RD, it still kinda looks odd seeing a yellow blob coming out of her throat. Also, the "S" in "Swag" is pretty hard to see.
This turned out really great. Those sunglasses that Fluttershy is wearing actually suit her, and make her look cool like Rainbow Dash at the same time. This wallpaper is... there really are no words to describe this. You would have to bring the coolness down in order for there to be words to describe this.