Text is way to strong, as Van1lla said, you don't want it to be the focal point, so make the text as discreet as possible, with these types of signatures you don't really need to add text, the light bit just above the text draws my eyes to it straight away.
Easy improvement = Get rid of text and colour/light splodge above text, use curves to give it a professional touch and darken edges of the galaxy looking thing, then to finish up use a colour balance on warm. Should look fine after.