some tired ramblings...
there's different types of "slime" material.
u have see-through jelly type like this
little guy i did.
u have heavier, more opaque moss-type slime like the my edit.
then there's somewhere in-between like cyangmou did.
at this scale i think its pretty difficult to add texture detail like i did and ALSO make it a clear jelly so i opted for all detail.
but maybe its less likely a jelly substance would make detailed shapes like this anyway.
it also depends on ur usage...if ur going to animate him doing all sorts of things for example then this much detail is much more difficult to work with.
so i'd say consider ur material and work from there.
looking again at ur original design i think he looks like a very simple jelly type guy so it depends if u want to keep him like that or what.