A quilt is a kind of blanket that is made from layers of fabric stitched together. The top layer is made from scraps of fabric made into patterns or a picture. Quilts used to be a good way to use up leftover bits of fabric, but in modern times people make quilts as a hobby using new fabric in the colors that they want.
Stilts are long posts you wear on your legs that make you taller. You can get lots of different types of stilts. There are ones that are very long that you have to hold onto with your hands and there are little steps for your feet. There are ones like in the picture that strap to your legs so your hands are free. And you can make your own by putting loops of string through large cans so you can hold the ends of the string, and then you stand on the cans.
You tilt something when you make it lean slightly to one side or another. The woman in the photo is tilting her head to one side.