personally i dont like anything with anime based renders in as i have always found it hard to create to much depth with simple colours and lines being on the render, and i think this just follows my feelings, in comparrison to your other work this does not have anywhere near as much depth and personally this isnt one of my favourite pieces of work from yourself. i think the sig itself there is nothing wrong with. the c4d's flow well with the render and colouring is good, just think it needs a little more depth. imo stay away from anime renders. good job all the same though.
v2 seems better but it looks to empty. Try adding something more to it. A border or some text or visible lighting or the like.