Well hey, having read both of your stories so far, I can assure you they are very fun and well written! :D
You write about interesting situations that lead to the changes, and the flow of your stories is actually really good! Doesn't feel too short, and you don't ramble on either, so that's a good balance!
Your description of the actual transformation is done well in both stories: I saw you took a bit of a different approach at things like the rear talon forming in the Cardinal TF, or the hands changing in the Kestrel TF! Both were interesting and different from the 'norm' - but don't get me wrong! It's some fresh ideas for Avian TF, nothing wrong with that!
And like I said above, your stories have fun themes and you seem to like sticking to happy endings, and that's always nice to see! :)

As for what you could improve on... If I wanted to be a little nitpicky, I would say do a little check for word repetitions every now and then, try a couple synonyms, but it's not a big deal and doesn't take away from the stories themselves, honestly!
One thing you could try and play around with is to make TFs feel more dynamic by having the character doing something at each stage of their change! Something that relates to that specific change, if that makes sense? For example, have them trip and fall as their feet change, have their arms change as they try and stand up afterwards, or their beak form as they hold their head, etc! Give it a try, see if it works for you! :)

But really, you're off to a great start with TF stories! I know the lack of feedback can be a bit disappointing, but don't let it discourage you! It can also mean that you're doing things right and heading in the right direction. And doing more writing will help you develop your skills, so!

Keep up the good work, and looking forward to seeing some more stories from you! ;)

Thanks it really does help.

You are very welcome! ;)