ἐν πίθῳ ἡ κεραμεία γιγνομένη → trying to run before you can walk, the potter's art starting on a big jar
ἀγγρίζω: «ἀγγρίζειν, ὑφαιρεῖσθαι, ἐρεθίζειν», Ἡσύχ.