I've begun sewing in the last few months (must be an inherited trait, pretty good with no training!) but I'm making a cosmetic bag (small, 7" top, 9" bottom and 5" deep) but for the LIFE of me cannot figure out how to sew the lining properly! currently I am cutting 2 pieces of outside fabric, 2 pieces of inside fabric and 2 pieces of sew-in fusing stabilizer (thicker, I love it), I then sew the zipper on the top of the the still seperate pieces and then sew closed and make my boxed corner edges but the inside bottom looks awful

....... can anyone help? I can't find a youtube or anything about this..... well without the zipper at the top. Thanks...........