Hi I am going to go over your Lesson 3, first of all congrats at getting back and now,

Arrows:-

some of your arrows are wonky, not bad but i suggest to be more loose with your hand and you need to keep in mind the perspective, the farther something is the smaller the closer something is the bigger it is,

here check this out for arrows:-

https://youtu.be/ptV6MOWSaYA

Leaves:-

They are done well, but i would suggest to do more curve leaves for example :-

https://youtu.be/T39HglB8KJc

Branches:-

The branches are done well, nothing much to say here.

Plants Construction:-

well at least here your leaves are done very well, i don't see a problem here

so have just follow the above link do that before you move on to the next lesson.