No, not screwed, but it makes things harder.
I think you'll need to clone the floor upwards. Clone it further than you need, then mask a crisp line across.
What you "prefer" is completely irrelevant. Once your screen is calibrated and matches your prints exactly, THAT'S WHERE IT STAYS.
Did you follow my instructions?
I think this could work for the second one:
But if you're new to Photoshop, this is going to be darned hard.
This is the method I used. But it's not for the faint of heart.
Best in the business, I promise: http://www.damiensymonds.net/training.html
These are not simple at all. Don't feel bad that you haven't been able to achieve them. Let me play a little and see what's possible.
Oh, this is such a great question!
There are two aspects to this. The first is clipping. The second is print gamut.
It's possible for colours to not be clipped, yet still be unprintable. But the shirt definitely is clipped here.