Thanks for the replies. Sinking the stitches into the fabric by pressing makes sense. Now I just have to get into the habit.
Steady betty is not in my budget, but I find if I put a terry towel on the ironing board before I press the seams, that it grabs the fabric a tiny bit and the pressing is more efficient.
I'm sure the steady betty would be better, but this is working for me. My accuracy is greatly improved.