these are about somewhere 7/10,it is true they do have some similarities.
Yes, that number will really help them improve in the future...
Anyways, I unfortunately don't have much time to critique these as much as I want to, but there are some things I could try to help with right now.
First off, don't save as jpeg. Since it distorts many of the pixels, go with png. when saving pictures.
On the Fire starter, I love entire concept behind it, and out of the three it seems to be the most thought out. While the people before me mentioned that there is too much fire I would disagree since rapidash has quite alot of it, but it is pretty random. I don't like the idea of having fire on one side if there is nothing to difference the pokemon besides it. I think the fire should either be both on the front legs or both on the back legs. The fire on the head seems sort of pointless, I personally would scrap the fire and change the mane to still be fur but curl or resemble fire. Finally I love the rock feet, I think they are plenty enough for a rock type giving things like cranidos just have few spikes of rock, so it should be fine.
The grass starter I do also feel looks too much like a digimon in the sense that the expression and overall design of the body seem too human like. Plus it looks more like a harpy from some RPG than a pheasant. I would suggest making the leaves on its head either more detailed, or changing it to a specific flower or plant that expands as such. Because as Yami Ryu said not all plants are green, and I think the one thing this pokemon is lacking is personality.
The water starter is a good idea, but more than anything the shading and linework are what needs the most work here. I feel that even if the bottom region of his leg is skinny, that perspective wise his leg that is most facing us gets way too small towards the end, especially to hold up a massive body like that. I think his head should be more round at the top and not just turn into a practically straight line, same with the fin on his right arm, it gets way to straight as it reaches the end. Plus, I realize this may have been done before D/P were released, but I feel the fin arms are overkill with buizel and floatzel existing. Finally I think the shading is screwed up by the fact that if its coming from the northwest like usual, he would have a highlight on his right knee which facing opposite of it. Both that highlight and the other knees highlight are almost touching the shadow, which doesn't happen since on a rounded surface the highlight lies within the form its on, and gets progressively darker as it goes out.
I hope you take some of this into consideration, since you have some nice ideas here, and working with ms paint can be hard for pictures like these. Also sorry if I organized things bad in my paragraphs, because I'm sorta in a rush.
