A vertical signature is way harder to make then a horizontal one and you can't create a vertical one like a horizontal one. Here are some points which may hep you to improve:
The render doesnt fit a vertical signature at all, it is very boring to look at since there is no dynamic in it (in other words it looks very static)
The background is very monotone in colors and combined with the render, you get a very boring vertical signature to look at especially the left half of the signature. And only using C4Ds as BG in a vertical signature doesn't work out well 9 out of the 10 times .
Text has been placed way better then previous times, perhaps you could have placed it a bit more to the right.
A vertical signature is way harder to make then a horizontal one and you can't create a vertical one like a horizontal one. Here are some points which may hep you to improve:
The render doesnt fit a vertical signature at all, it is very boring to look at since there is no dynamic in it (in other words it looks very static)
The background is very monotone in colors and combined with the render, you get a very boring vertical signature to look at especially the left half of the signature. And only using C4Ds as BG in a vertical signature doesn't work out well 9 out of the 10 times .
Text has been placed way better then previous times, perhaps you could have placed it a bit more to the right.