1. Creatures (i.e. the quiddities of creatures) are not contained in the divine essence.
2. Creatures are known by the divine intellect, which is their principle of production (presumably in esse reale; at least he does not specify intelligible being)
Interestingly, I think (3) gets Aquinas out of a Plantinga-like attack, which claims that the divine intellect "depends" on the "platonic horde" which is apparently distinct by some unspecified distinction from the divine essence. Scotus and the Scotistae probably need a little extra work to get out of it.