My Process of Creation
First off you open Inventor and start with a part template, then you click on the Start 2-D Sketch button in the top left corner which then gives you a screen shown in picture 1, click on XY plane and create a outline of your shape as shown in picture 2, Extrude your outline shown in picture 3, then use extrude to cut out a .75 by 1 inch square shown in picture 4, now create another sketch and make a .25 by .5 inch square as shown in picture 5, use extrude to cut out square shown in picture 6. Which leaves you with your finished project shown in picture 7.