Not bad for a first. Try and make your renders a little more visible, but also blend them into the background more. 1 little tad thing that will help is to add a border and maybe choose a smaller canvas size.
under chuck norrises bed. yea, even hes scared of me
mostwanted if these are his first sigs or wateva then he cant just get thrown into c4d.... dont worry bout c4d just yet mate
all you gotta do is brush up on some stuff, #2 and #5 is probably the best ones. they have a good flow, the colours are smooth. only problem is, that the sig needs a bit more action. not cahos, interesting sutff. try some stuff from the filters menu. and well worry about the text later. its not too bad
Also for some random pics I find, whats a good way to just get an object from it because like in that tut the orc looks like it had no background or anything. All the pics I got do and it screws me up sometimes.
I wuld say anything by Chrono or Bull3t. They have some nice tuts. Chrono can get a little complex but its nice when you get it. And standoff has a new tut up. I actually did my Goku one in that style long before he tut'd it so i'd recomend that one as well. Jaded's other tuts are nice too. check the Zelda one.