wow the leaves are well done with variety and as for the arrows 1st and 2nd page has some weird turns so for that look at this video:-

https://youtu.be/ptV6MOWSaYA

Branches also very well done, so not much for me too say here.

the construction of plant is well done and seems you have understood the purpose of the exercise.

the cactus have a bit of 3d problem so for that look at my cactus here:-

https://drive.google.com/file/d/11IWEtsnt3-wLmqXt-YM0shnnrwhLzDa_/view?usp=sharing

other than that its good.