I like your bear, it resembles Delteria well, the only change that would have to be made is the color selection. Delteria uses bright vivid colors whereas yours seem a bit washed out/low saturation.

For the flower, I would work first on the line art then coloring, same advice I gave kiko. If the line art doesn't look like a flower, your shading wont change much.

For the torch, fire is untamed, meaning you have it in simple patterns whereas fire in actuallity tears apart and spreads in multiple directions. For reference to what I mean, look at my profile picture.

Overall they are pretty good, keep practicing