The other day my mom made me this beautifull bed. Looking on the internet for some ideas, she found this one. It was very easy to do. It only took a couple of hours and I helped her.
Here you have the sizes:
Place the two parts on each other and sew them along the edges. Remember that you must sew the fabric inside out. Leave a small part without sewing because you need to put the filling
Take the leftover fabric, cut 8 strips. These are the strings that will serve to connect each end of the little bed. Sew each strip as seen in the picture, it's basically a strip at each end of the sides of the bed.
Remember to leave some space to fill the bed with pillows
Finally tie the strips
This is how mine looks