I shoot a Sig Sauer P220 Compact, a Taurus PT-145 and a NAA Guardian 380 all one-handed when I go to the range. I shoot two-handed on occasion but I shoot mostly one-handed. I have this feeling that I'm not always going to be shooting at a piece of paper that is holding still for me with no obstructions in my way that I may have to move, like a bush or door. Consider moving the target in close until you begin to see progress, then back it up. Practice, practice and practice will help to "get you there".