The "pocket" your talking about is called the gusset, which is in the crouch area. It's main purpose is for hygiene and absorbency.
Diagonal line, is the correct answer
I'm an amateur at digital art, so my suggestion may not be as useful to you. I suggest using the RCA Cambio, It's 32GB and comes with Paint 3D. It's also a laptop/tablet hybrid, so it's good for other things too. I got it at the affordable price of $120 at Staples
Thanks!
Your artist friend,
~Steve
To make a cake the ingredients are
2 sticks unsalted butter, at room temperature, plus more for the pans
3 cups all-purpose flour, plus more for the pans
1 tablespoon baking powder
1/2 teaspoon salt
1 1/4 cups sugar
4 large eggs, at room temperature
1 tablespoon vanilla extract