Solidworks design

I NEED TO CREATE A CAD FILE USING SOLIDWORKS SIMILAR OF THE ATTACHMENT PHOTO (PENHOLDER). MAKE SURE THAT THE SIDES CAN BE ASSEMBLED TOGETHER, 

ALSO I NEED SOME SCREEN SHOTS OF THE KEY STEPS WHEN CREATING THE DESIGN. I NEED TO CREATE THE CORNERS THAT GIVE IT THE ABILITY TO BE ASSEMBLED TOGETHER IN REAL LIFE.

DIMENSIONS: 

HEIGHT: 10.0 CM

LEGTH: 5 CM

WIDTH: 7 CM