Hey man;
You have all the necessary tools to improve, we have given every last tip of possible advice; this reflects it alongside with a new colour pallette wich seemed to be your biggest concern.
The colours themselves are irrelevant, you could make the blob blue, purple or PINK like you wanted, the colours there, in addition to show you what hue shifting was, were showing you basically that they needed more contrast (that means in really basic terms, to pop out more), the inner colours, so the shading of the character is more noticeable, and the outline of the char itself so it stands out from the background.
I give you one final edit, with the colours i think you seemed to search for, in pure tones of pink, with practically no hue variation.

Value all the input that you have been given, keep at it, and dont give! we all start somewhere, so try and get those concepts we are telling you about; with practice, youll handle them in no time.
-Krut