i like the look of needle turn without doing the work so my method of machine applique is a little more complex than fusible but i prefer the look.
i'll try to detail the process for you
1) cut the applique shape out of fabric and out of interfacing (woven light-medium weight).
2) sew them to each other, right sides together, with water soluble thread.
3) snip the interfacing and turn the shape out just like you would when making a pillow.
4) press the piece into the desired shape, once you're happy, give it a shot of steam from the iron.
5) the steam will dissolve the thread and your able to remove the interfacing with ease while leaving the seams on the fabric piece turned under.
6) place the applique piece onto the background fabric and stitch in place.
i prefer to use the blind stitch or the zig zag stitch with silk thread that matches the applique piece.
i use an extremely tiny stitch that only allows it to put a small stitch on each side (small zig into the applique and then a small zag into the background) i try to keep it just to the sides of the needle turn.