It was scary at first and my first goes resulted in masses of tangles thread and some truly awful quilting, but as I practiced my quilting improved. Now one of my favourite parts of quilting is seeing the transformation of a quilt top into a quilt. I'm the first to admit I am no expert and I wouldn't look too closely at some of the things I have quilted, but I am not entering shows with them and most quilts I make are for my children or other family or friends and I just want them to be loved and used.
I use a Bernina 440 for all my piecing and quilting. It is a lovely machine to use and it does have the bonus of having a stitch regulator so the stitches are even as you free motion quilt, but I did learn to quilt on my older Janome that doesn't have this feature. The quilting area for the Bernina is not huge, but I have still managed to quilt all the big quilts I have made with it.
If you still aren't sure about quilting it is worth getting out your walking foot and just doing straight lines or 'kind of straight, kind of wonky lines' like I did for the Scrappy Crosses Quilt.
Once you learn to do basic stippling it is quite easy to add a few variations. You can add in some loops or flowers every now and then. In Night Sky I added stars as I quilted to echo the stars in the pattern.