You may not be able to do the blanket stitch on your machine, but it is a good idea to try out all the stitches on your machine, and try changing the lengths and widths if you can. You may find a stitch that almost mimic's the blanket stitch by doing that. The blind hem stitch may be one of them. If that doesn't work, you could use your machine's zig-zag stitch to do applique, if you can adjust your width and length to something that will cover the edges well.