Are there any mistakes in this base sketch?

[main kestrel]

Simple as title any improvements to be made on this base sketch before getting into colouring?

[lunar crane]

The left pant leg(our left) is much more fitted than the right. You’ll need to make it match more in how baggy they are

[main kestrel]

Noted thanks 😄

[surreal wharf]

This kinda looks like Toph from avatar in her 20s love it

[weary oak]

Not necessarily a mistake, BUT I do have a suggestion to make the pose a little more dynamic. You can try to have her put more weight onto her legs and drop her head a bit.