Naomi Osaka drew a cat under her Australian Open camera signature, but she was not impressed with her 'ugly' result

• Naomi Osaka cruised to the Australian Open semifinals with a 6-2, 6-2 win against Hsieh Su-wei.
• After the victory, the 23-year-old signed the camera lens as is a tournament tradition.
• Osaka tried to draw a cat alongside her signature but was disappointed to find that "it's ugly."

Any good artist is hypercritical of their own work, and Naomi Osaka is no exception.

The 23-year-old tennis superstar cruised to victory in her Australian Open semifinal match on Tuesday. As is tradition for players advancing in the tournament, Osaka signed a camera lens following her post-match interview.

She also tried to draw a cat under her signature, but was apparently appalled with the outcome.

"Oh my god," she said into the camera. "It's ugly!"

The three-time Grand Slam champion smiled awkwardly and cocked her head to the side as she finished her less-than-ideal doodle. She added some ears before stepping back to take in her completed masterpiece. She winced and walked away with a shrug.

"A bit of artistry from Naomi Osaka," one commentator said. Osaka herself clearly disagreed.

But Osaka's lackluster sketching was her only performance on the day that left something to be desired. She was absolutely clinical in her 6-2, 6-2 win over Hsieh Su-wei - which took Osaka just one hour and eight minutes to secure.

Now, the 2019 Australian Open winner will look to carry that momentum into the semis, where she'll face the winningest player in the history of the tournament. Serena Williams - who has won the Australian Open seven times in her illustrious career - looked to be in peak form as she dismantled world No. 2 Simona Halep in straight sets on Tuesday.

Hopefully Osaka's cat mishap didn't shake her confidence, as she'll need every last bit she can muster for Wednesday's battle against her idol-turned-opponent - and a 23-time Grand Slam champion.

Check out the clip of Osaka's camera-lens signing below: