I'd recommend posting these in the figure drawing section since you made the beans, not sure about the animal construction though. Though these are really good! Maybe the connection between the beans is a little thin, but overall, great work!

Heya, Welcome to the community! It looks like you've got a good eye for colour in your first picture, noticing how colours actually change hues when hit with light or shadow. To improve on these, you should work on your values more, I've got a great video for that here. Only about the first 35 mins are extremely important, then you can listen to the rest like a podcast since it's roughly the same idea. https://www.youtube.com/watch?v=xWMMo1v594Y&ab_channel=NoahBradley The general concept here is that a picture reads from it's values. If I take your second painting and put it into greyscale, it looks quite flat, but if I quickly paint over some darker colours, there's a lot more depth in the piece already! The colours I used were random, since hue (Colour) doesn't matter much compared to values. I just painted over the piece with a multiply layer, and made the sky much brighter to add more contrast/hue variation. You can tell how your hues are in a piece if you make a new layer, set it to colour, and make the whole thing grey. (here's a tutorial for that. https://www.youtube.com/watch?v=gJ2HOj22gDo&t=358s&ab_channel=MarcoBucciMarcoBucci) Hope that helps and keep up the great work!