I would say to use "write," as in... "I need to write my doctoral dissertation." If I had to choose, I would say "do" over "make," but it seems strange to say either one. I would also say, "God takes such good care of His children." (Most bibles ascribe the male gender for God. The use of the word "their" is grammatically incorrect; however, often, when obfuscating the gender, I've seen "their" used. Maybe something like "Latinx" as opposed to "Latino" or "Latina"?)