1) Construct a myth 2) Cook up 3) Fabricate 4) Invent 5) Make into a myth 6) Make up 7) Manufacture 8) Mythologise 9) To create a legend about 10) To interpret as mythological 11) To make into a myth 1) Mythologise 
• (v. i.) To construct and propagate myths. • (v. i.) To relate, classify, and explain, or attempt to explain, myths; to write upon myths.
My·thol'o·gize intransitive verb [ Confer French mythologiser .] 1. To relate, classify, and explain, or attempt to explain, myths; to write upon myths. 2. To construct and propagate myths. 
[v] - construct a myth 2. [v] - make into a myth
mythologize 1. To relate a myth or myths; to construct a mythology. 2. To make mythical; to convert into myth or mythology; to mythicize.