When I was a beginner, I stumbled because I couldn't draw symmetrical outlines well.
(and still is)
After rasterize, it seems that it can be diverted to the left and right contours by adjusting it with the distortion tool.
Please adjust it freely.
初心者の時、左右対称の輪郭が上手く描けなくて躓いていました
(今もですが)
ラスタライズ後、ゆがみツールなどで調整することで左右向きの輪郭にも転用できそうです
自由に調整してお使いください

