I've never thought about that... yes, I guess I do tend to lift my arms up high when I knit. It feel strange having it sitting in my lap for some reason... maybe because I'm so used to doing projects where I really need to be able to see the stitches. LOL
When I work on it tonight, I'm going to try to be aware of holding it down lower. I like the cushion idea!! I've got two on my sofa that would sit nicely in my lap while I knit and that way I can still have my arms up where I like them.