I learned this one from watching Christina Cameli's Bluprint classes on free motion quilting - forget which one, but she talks about looking at the scale of your design and giving yourself a couple reference points to hit before and after you turn the corner so that the design goes out towards the corner.
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Markup wouldn't let me put a dot in the actual corner otherwise there would be one there too. So basically, you try to judge the distance between your humps to get an idea of how far away your reference point needs to be from the corner, and then see how you can adjust the humps as you approach your reference point. It's helpful to mark the one after the corner too, so you know where to hit with the other hump, since it's really 3 humps to turn the corner. I didn't hit the one after the corner very well, but it's hard on a tiny phone! sorry
Does that make sense?
eta: Your doggies are adorable and I've loved seeing your progress on them! Great job!
eta2: Oh, I see you came up with another solution already, haha! Whoops. Well, hopefully the info helps for the future!