You're not so bad, actually. You could've chosen some different font on the first one and maybe put the text closer to the render.
The funguses in the second one look weird.
The third one has too vibrant colours and is oversharpened in places.
The fourth could use some better blending.
The last one is good, but weird; the pentooling is nice I guess but the back side of the lion's body is oversaturated.