Heyhey @ChrisConnor, Shani here, welcome to the forums
You're gonna love the feedback phase, you level up instantly. Kudos to you on your project and seeking to improve it!
First off, do you have inspirational artists who you're hoping to "imitate" certain aspects of? That'll help us gauge where you're at vs where you want to be.
There's a lot to work with with these pieces. Thanks for providing multiple works as they show your range and consistent style.
The thing that jumps out at me when I see your work is the emphasis on environments. A lot of the settings have multiple tones and hues (3+ just in the tulip (?) field). You carry this painterly approach with the lion elephant (see the warm hues in the trunk).
There are certain inconsistencies. I don't know if that's an issue for you or if it's something you did purposefully. With the Lion elephant you use hues, values, & crosshatching. With Theo and Charkie the colors are kind of flat. But even with the little boy, his shirt is gradiented (it's a word) out while his pants are three toned. Do you see it?
I really dig how painterly you environments are. I can tell the environment is intended to be vivid. I caution you with the value in the sky against the little boy's head, as they're nearly the same value. You can mitigate this by adjusting the values behind the little boy's head to provide contrast.
So, the texture and style on the bush in Piece #1, and the tree trunk in Piece #4 are fire. Really well done! The trunk blowing the Lion Elephant into the air in Piece #4 is equally fire! (a good thing). Now look at how vibrant and dynamic those subjects are and compare them to Theo and Charkie. Those two seem out of place... flatter by contrast, do you see? I understand this is a visual storytelling technique - I suspect you designed these two simpler on purpose? If that's the goal, great, run with it. If you didn't intend to make them flatter, I encourage you to adopt some of the techniques you use for the rest of the piece to your rendering of these two.
In all, I think you'd benefit from adding a bit more contrast - in the general sense, but also with spot subjects: the bird on the tree in Piece #5 is very similar in value and hue to the sky, so it blends in at first glance; The boy's skin is similar in value to the sky in a number of pieces, to the Lion Elephant's foot in Piece #2, to the walkway in Piece #1 - if you add contrast to your hue and value choices, you'll be able to make things pop more and add depth, without having to use heavy outlines (it seems you don't want to use heavy outlines?).
All of this said, I love the way you approach your scenery, the barn and silo are legible even at that size and distance, the vegetation looks awesome, and you've got a strong command of color (see the Lion Elephant). You're experimenting with a few styles in these pieces, all of which demonstrate a good foundation to build on. I think you should be proud of your work and I'm looking forward to seeing how you improve on it!
I hope this helps! Welcome to the group, happy drawing
Shani