### Clue: Japanese art leaders of army museum kept in unfinished base (7)
### Answer: ORIGAMI 
 ### Explanation: Definition: Japanese art
 **1st letters, respectively, of**(leaders of) "army museum" **contained in**(kept in) "origin"(the base/the starting point) **minus ****its last letter**(unfinished …).**
Defn:  … of paper folding.