1) when doing fusible applique do I need to put something behind the block if I use a zig-zag or satin stitch and if so what is best to use?
Not for zig-zag, but yes or satin stitch. I use a tear away stabilizer for satin stitching. You could also do a buttonhole stitch (also called a "blanket stitch"), if you have that option on your machine.
2) when using fusible what is the best way to start and stop my stitching to lock it?
It depends. With satin stitching, you just overlap a few stitches at the beginning and end. Otherwise, you can do a few micro-stitches (straight) at the beginning & end of your stitching.
3) again when using fusible how do I make nice circles? Cutting and stitching.
I bought a locking compass for larger circles, cut out of mylar template plastic & sand the edges smooth. For smaller circles, I use Karen Kay Buckley's Perfect Circles. With fusible, I found I get better results by fusing to the fabric first & then cutting to the correct size.
4) I did a practice block using heat 'n bond lite but it still seems a bit stiff to me, what other products do y'all recommend?
Almost anything. Pellon 805 (Wonder Under) would be better. Misty Fuse is the best. Also, I "window" my fusible before fusing it to the fabric. Just cut away all but 1/2" from the edge. Here's a YouTube video of Pat Sloan demonstrating: https://www.youtube.com/watch?v=r_m84NtcyUk
I haven't totally decided if I want to go w/fusible but these are questions that came ot mind while practicing on a block. Today I plan to try the freezer paper method using spray starch and then hand sewing the applique...that will probably result in yet more questions so thank you for being helpful and patient w/me.
Jenna[/QUOTE]