Mesa is Mesa in English, not table by the way
Also, this doesn't look like a mesa biome, it looks more like randomized islands with a non-mesa block palette.
You wouldn't find trees in a mesa biome as well, so I don't know why there's trees.
I have never seen sand piles in a mesa biome, so I don't know what you were trying to do there.
I also don't get why there's a house randomly there?
Why are there pumpkins in the middle? (bringing me to my next point which is: use the normal texture pack)
Lastly, the middle island looks too flat and doesn't look like a floating island.
So it would be better if you could fix all the errors.