I think the angle of the leg can still be used. It's the foot that can be adjusted. I'm not the greatest spriter here, but I have learned that the foot can be broken down to wedge shapes for poses like that.
Here's how I would handle the foot, personally. There's some other stuff that could be improved on as well. The overall muscle anatomy is wonky. The shading of the bicep on our left makes it look longer than it's supposed to be. The torso feels flabby due to the linework and its width. Overall, it's great to see you're trying and and open to feedback. Keep up the good work!
EDIT: Also, I can give an example for clothing folds if you want.
-I don't think that Sabo was killed while trying to rescue Kuma, then again I don't know who would try to protect him during that time. It would really blow if he was killed off screen. -Seeing all of the bounties of the Emperors was awesome. It's kinda funny how minor of a threat Blackbeard is when compared to other Emperors. It's was also cool to get some origin of how all of the Emperors knew each other. Can't wait to learn more about Rocks. -I'm glad that Issho got his wish and the Warlord system was yeeted. Maybe we'll get more insight on how Mihawk became so powerful to the point that he was originally thought to have Devil Fruit Powers. -Koby's really starting to go up in the world! -I kinda hope since Koby's the one going after Hancock that they come to some sort of understanding, since IIRC one of Hancock's reasons for becoming a Warlord was to make her people's lives easier, also to spite the Government since she was enslaved by the Celestial Dragons. -I need to more about Drake. He's a chad.