sentences:  By 1749, Karl passed junior architects' exams to the panel presided by Bartolomeo Rastrelli and was appointed an assistant to Alexey Yevlashev.Rastrelli supervised Blank's early career and instructed him to plan restoration and expansion drafts for the main cathedral of the New Jerusalem Monastery.This early project never materialized, but a few years later, from 1756 to 1759 Blank himself took the lead in restoring New Jerusalem.