Question and Answer phrasing basics

Theme and Variation Basics:

What are some Basic Variation tricks?

If i write a motif,Lied,melody line,theme how do i write variations ?

Does Variations take a Theme and ADD in new parts? has different cadences?

Shifts the Tempo of the theme? changes Time signatures? different keys?

Question and Answering Phrasing basics:

How do i compose Question and Answering Phrases?

What are the Basics of doing Question and Answering Phrases?

I think the questioning Phrases doesn't end on the tonic but the dominant or another scale degree to make it unfinished to create tension

The Answering Phrase ends on the tonic to resolve