Always appreciate people posting tags on sythe, but I can sure give you some CnC for your first text signature.
The text itself is hard to make out due to all the loaded effects. When adding in nebulas try switching it to channel instead of layers (this
http://gyazo.com/22d1b83dcb6c870e1141a6eed4643135) and holding ctrl on the RGB layer then dragging the selected part onto the text. After that go over the part you don't need with a larger soft brush eraser because the erasing you've done atm looks sloppy. Also try to find some transparent lightning bolts so you don't have to erase the edges, I have some if you want.
If you have any questions, add my skype mate I can help you out.