Hi,
I just wanted to get something off my chest here. Working in games dev, I ve seen a lot of UIs that have issues. Therefore I just wanted to pass along that the following button layout is terribad. Please don't do it.
Unless there is an UNDO function, like a backspace key for a touch-keyboard to correct misses, you should never arrange buttons that imply a final decision in such a close proximity to each other. It increases the likehood of erroneous input and thus frustration.
Now if you have an undo function or extra confirmation dialogue too, that would also work of course.
Cheers,