Ok so there's a couple things we can do here. Start by raising your thighs 1/2-1". If you need to, remove more, if not all the upper return edge do so.
Then I would start removing material from the bottom of the shins a little at a time, maybe 1/2". Afterwards, with the sniper knee temporarily installed, the top of the sniper knee should sit close to the lower edge of the thigh. It doesn't have to be perfect. In the movie they're all over the place.
The shin halves look correct however, for the sake of argument switch legs and post another pic so I can see what it looks like.