For example? Please be specific. I'm especially interested in the inferences you can cite that the designer is singular.
It sure seems to me that only a committee could have such a stunning series of failures, that 99% of the designs failed.
Omnipotence may be inferred from the amount of energy contained in the universe, all of which would have its source in the intelligent designer.
Omniscience may be inferred from from the amount of information needed for matter to be organized on the scale we observe.
Singularity may be inferred from the general cohesiveness of the universe coupled with the philosophical notion of a first cause.