1:
- There is no definite light source
- There are too many colours all over the place (many colours can work, however with the current style that this signature is made with, it makes it seem like a clutter)
- There is no definite flow since all I see are "spark" effects that are randomly placed
- Overall it is just too messy 4/10
2:
- There is a light source (top right I believe) but it is clearly not having any impact on the rest of the signature. The light source does not reflect on the lighting of the rest of the signature which makes it look like it has no "depth" (which this signature clearly does not).
- Because of how wide the render is, the canvas for the signature should have a shorter height because it doesn't seem proportionate.
- The background follows an orange/purple gradient colour scheme but the foreground follows a completely different colour scheme which makes it seems like the render and the effects are just randomly placed on top of a picture
- Once again there is no definite flow because those effects are all over the place 5/10
Good luck on future projects.