well... please... don't blame me for being "rude"... i just want you to improve... and a good (but hard) CnC will help you ^^
let's look toghter to the basics of the tag making ^^
1) the light: in a tag you should work on the light to make it "realistic"... so you should search for the light source of your render and keep that light source on every single resource you use (render, C4Ds, effects, textures... and i repeat C4Ds... they mostly have a light source too like the render... so you need a C4D to fit the render's light)... in this tag you completely made a wrong light source... the light of the render comes from HIS left (right side of the signature), so putting a light on the back will make it really unrealistic =/
2) the blending: for blending i mean how much the render fits the signature's effects... or better.... how much the signature's effects fit to the render... sice you make a sign from a render... and not from an effect xD
this is an example of a good blending https://2img.net/h/oi46.tinypic.com/oh00uw.png
3) the text: well... a good text is pretty hard to make... so i just suggest you to don't use it and make alot of pratice on text placing/making in "private"...
4) the flow: the flow is hard to explain... is something like an invisible line which follows the moves of the render...
horrible flow: https://2img.net/h/oi50.tinypic.com/1z6b3m9.png
good flow: https://2img.net/h/oi47.tinypic.com/2ql7uxz.jpg
5) the depth: well... i guess the word in itself explain what i want you to do:
every effect you apply, be sure your tag doesn't become "flat", if so the signature lowers radically his quality...
these are just the "basics" of the tag making... i hope this will help you in future
