Edited to add: I wrote this and only then did it hit me: I spent all that time adding the scuffed spot in the grass under the tire swing to give it a sense of motion, the leaves on the flower, snipping the yarn ends, hours counting stitches and doing the ribbing on one side and not only did I not do the door handle, I snipped the end that was going to BE the door handle! Aargh!
So to write down quick what I just did because I got a nice lever handle and I’ll never remember how I did it: I brought the new yarn from below the door frame, crossed it over to the nearest stitch on the door, held that from pulling out while I got out a knitting needle and used the sideways bar I’d just made to knit a stitch into. Then I did a yarn over, then made a third stitch with the bar. Three stitches. Then I crossed the third stitch over the first, then the yarnover over the first, and after pulling the yarn through to knot the end in a point, got the yarn needle (eye type) back out and pulled the yarn down to the left of what I’d just done to the back. And then I wove in the two new ends.
Oh look at that black stitch that should have been white at the bottom of the door. And guess who just snipped the new white ends off!