A lot depends whether you want to do machine work with iron-on interface or hand-work. Neither is really scary at all.
For the interface, you draw the pattern on the paper (make sure to mirror image where necessary), trim roughly around the drawn pattern, pull off the paper and iron it (according to manufacturer's instructions) to the BACK side of the fabric. Then you trim ON the line, peel off the other paper side and iron the interfaced fabric to the backing piece. I usually use a blanket stitch, a zig-zag stitch or a satin stitch to secure the edge.
Hand-stitch I'm not that good at but there are lots of different ways to attach the pieces too.