1. buy a piece of fabric for the backing that is at least 4 inches wider and longer than your top.
2. buy a piece of batting (either in a bag or off the roll) that is at least 4 inches wider and longer than the top. Look at the instructions on the batting. It will tell you how closely you need to quilt it for the batting to stay together when washed. I prefer something that only needs to be quilted every 4 or more inches. I feel like cotton batting is easier to use (but this is just my opinion and others prefer other batting)
3. iron the backing. Place the backing good side facing the floor. tape it to the floor (pulled flat but not stretched). Put the batting on top. Put the quilt top on top of that (with the good side showing). This is your quilt sandwich.
4. Safety pin the quilt sandwich together. Pins should be placed about a fist width apart (try to stagger rows).
5. Machine quilt. I recommend using the walking foot and stitching in the ditch. If you use a thread color like light gray or tan, it should fade into the quilt more (hiding mistakes). Look at the colors in the quilt and pick one thread that looks good. When you sew, usually, you sew with the quilt face up.
6. In the border, the easiest way to fill it is to make lines all the way around. An easier way to do it is to stitch in the ditch around the border and then mark the next line by using masking tape. quilt next to the tape and then move the tape next to that line... all the way around until you have filled in the border fabric enough to be pleased with it.
7. Come back to this quilting board to find out how to add a binding. I prefer the look of the added binding to a folded over binding but others have other opinions.