WEll. You say over your YEARS Designing. Then this is still quite poor quality work, i mean, i've been using photoshop about 6 months really... and i've seen complete beginners, including myself, come up with this level of work. So, if i'm honest.. not much improvement. I think that's down to style though.

Maybe you should try some other techniques, or methods other then signature creaiton, and filters, and photoshop tools. Most of them generlaly don't help. Filters give really bad quality effects most of the time.