Yes, that sounds about right. Thinking back on the stuff I am learning about FMQ, it has taken approximately 2 hours of continuous practice to get my curves smooth, then another 3-4 hours trying to get the pattern down I am FMQ'ing so that it flows smoothly when I work on my poor Featherweight (poor in that it is the only machine I can successfully use to FMQ in my house).
It does take awhile, but boy is it worth it. The recent quilts I have FMQ'd are really looking good now. It's taken me about 40+ hours over the last year to get the work to look somewhat decent. I don't do much stipple, just a curvy line and occasional loop or ivy leaf or monkey face.
I appreciate the info!