The fast improvements I see are great.
Although if there is one thing that you have kept consistent as you continue to make signatures is that you don't really keep in mind on keeping the focus clean at all.
Most of the time there are way too many effects on top of the focus (which is your extract) and you should at least erase things here and there. One of the best tools in Photoshop, the eraser tool.
Also I've noticed a pattern in your last few signatures.
Get rid of the watery backgrounds.
Way too excessive and overused and in my honest opinion, seems to kill the overall feel of the signatures.
Keep in mind about the saturation levels of your signatures and the negative space.
While you keep those in mind, strategize on how you would place your typography on the negative space.
There are some occurrences such as one signature in your last post the "Sheik" signature that the text is barely readable. That's not a good thing.
Blue and red are supposed to be ideal harmonized colors, they're not.
Try to go with colors that fit with each other better. It's also a good idea to keep in mind about the color wheel.
That link right there is a tid bit of color theory and how to initialize it effectively.
Once you have these ideas locked in, then you'll be able to make some harmonizing and powerful signatures.