Just beginning. (Cambridge Dictionary)
Beginning to come into being or to become apparent. (Cambridge Dictionary)
Beginning to exist or appear; in an initial stage: (Dictionary.com)
Beginning to happen or develop. (Oxford Dictionaries)
An incipient situation or quality is one that is starting to happen or develop. (Collins Dictionary)
Examples
SAT vocabulary: incipient.

http://new.testmagic.com/vocab/incipient/
Incipient drawing by John Baird.

https://www.saatchiart.com/art/Drawing-Incipient-1/80995/2909166/view?prints=1
another word that could be useful!
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