ok lets start with that you have your model done now lets create a good texture/material...
here's what i used for material:
ok now lets apply it to the model( hope you know how to do it)...
now render the scene.... mine looked like this:
that does't look so realistic?...
so lets make more then just a model...
now do a light in front of it and make the color of the light alittle yellow.. like this:
now lets render the scene now...
hmm looks like i must move the light alittle back... but not much only alittle.. ok well it looks better now.. but thats not all where is the shadow?.. so lets create something it can be on...
when thats done apply a texture on it... now render and this is what i got:
and your done.. and remember the more stuff you got close to it and so like details the better it looks... hope you did't learn anything new now