This is really bags project in one. Sometimes I find it difficult to find a bag I really like, making your own allows you to decide the color, shape and size.
I used coordinating denim and cotton fabric for these. Any fabric could be used, you may need a liner if using thin fabric. I would consider this project to be more difficult because sewing skills and a machine is needed.
When sewing, remember to stitch pieces with pattern side against each other so when you turn it inside out the pattern will be on the outside. If you have decided to use three individual pieces for the sides and bottom, it may be best to stitch the ends together before sewing them to the front and back of the bag. Stitch the sides and bottom to each side of the front and back pieces of the bag. For the straps of the bag, take one strip of each coordinating fabric, place them together, pattern side in, making sure they are lined up. Stitch the straps down each side. When finished sewing, turn them right side out. For the tie enclosure, fold the fabric on half, tucking in any raw edges and simply sew them together. Repeat with the coordinating fabric.
When both pieces are done, it's time to assemble the bag. To assemble these pieces, you need to turn one of them inside out. You should have one piece with the finished side showing and the other with the raw stitches showing. Take the piece that is inside out and place it inside of the other piece. Match up the corners and make sure it's a good fit. Looking at the bag, there should be only the finished sides exposed. Fold the tops of the bag over making sure there are no raw edges exposed. Make sure the inside and outside pieces are lined up. Pin the two pieces together. Before sewing these two pieces, you need to attach the straps and ties. Pin the straps and ties where you would like them, making sure they line up with each other.
Now it's time to finish your bag. Sew the two pieces of the bag together at the top. Knot and cut any loose threads and your bag is done. Simply turn the bag inside out and you have a whole new look. This bag can go from casual day to a dressed up evening, just by turning it side out.