When I did my funky chicken buckets (see swap ... page 41 I think it was) I did #19 around the bucket but used the satin stitch for doing the chicken pieces so they stood out more. I watched / read tons of stuff before I tried it (my first try too).
One place said to use the slanted zigzag (#6 I think for yours) as it finished the edge a little more....I didn't like the way it looked for me. I had a "sample" bucket that I tried all different types of stitches on before I chose one.
Also, each time I turned off my machine and had to reset the adjustments (you know, like when you have to feed the natives), that I retested my settings just in case I forgot to do something. Write down your settings so you don't have to remember them between sessions.
I used the "needle down" button a whole bunch so I could turn corners and pivot...made it easier.
Good luck to ya...what doesn't kill you will make you stronger (so they say but I'd rather just practice)