First one is good. The text should be different. I see you have semi-translucent and plane at an angle. But I would definately suggest adding some real pizzazz? to the text to make it stand out more. The background alone shouldn't hold your sig. However if the background was a design to fit some text right into it it may be different. As for the 2nd sig the brighter colors are appealing to some, however I would suggest sticking with the 1st.