If your bag is made of soft material, such as denim, with the decoration of the problems avoided.
For summer denim bag to decorate in a nautical theme. To do this, simply take pieces of suede or leather, cut out of them in the shape of anchors, fish and the like, wastegate using the embroidery floss sew them to the bag, placing it where you prefer. In conclusion, tie to the handle of the lace cord.
If your handbag from light denim, you can paint them with special paints. To do this, purchase acrylic paint on fabric, inside the bag put the cardboard and draw the outer side of the accessory any pattern at will (at first it is desirable to draw with a pencil). Let the picture dry, then put on a cotton cloth and iron with a hot iron.
The easiest way to decorate a bag to stick to her application. They can be purchased at any fabric store. If you wish to do applique with your hands, then nothing could be easier. Take pieces of felt (or any other material but difficult to spill from the edges), draw on them, like flowers, cut out and glue to the bag using hot glue.
If you have quite a lot of free time, a bag made of denim can be decorated with embroidery of colored threads or beads. For this you need to draw a simple pencil on the bag pattern, and then carefully sew this pattern. Schemes drawings now not a problem to find on the Internet: use them.