If you'd like to do something similar but with two zipper pockets or three! the interwebs have you covered. You might prefer a slightly different shape.
And if the part that freaks you out is installing the zipper, check out this tutorial.
Of course you can make other types of bags like a tote bag or a purse or a sweet bag.
Okay, after a trip to Joann's tomorrow, I will sit back down and knock this one out. Because I do need another finish for tomorrow! I've got 31 projects to show.