Fetching details from the dictionary...

sketching; drawing from nature; portrayal; description
美術の授業で公園に写生に行きました。
We went to the park for sketching in art class.
画家が山で風景の写生をしていた。
The painter was sketching the scenery in the mountains.
写生大会で入賞して表彰状をもらった。
I won a prize at the sketching contest and received a certificate.