Need help with front/rear lights

As you can see I almost finished model but I have trouble making headlights and rear lights and also this scoops on fender and behind door. Thing is that I can’t make a decent shape and it looks jagged since headlights aren’t actually a sheered circle. Even more trouble I have with scoops, I punch hole in it (I couldn’t do that properly on fender as you can see) add shrinkwrap to copy of the mesh and that is fine, trouble is when I have to make these carbon fiber parts. Rear light are trouble in itself since they don’t sit flush but on top they do and on bottom are going inwards. What I have done is that I used vertices from parts that are making hole and model from that but I couldn’t make nice shapes.

If anyone have any tips/tricks or tutorials to suggest (except porsche from cgc as well as jeep and also corvette one, I have went through them but still can’t figure it out) I am listening.

@Black_Cloud From the images the headlamps look fine to me the tail lights look like it just needs a little better edgeflow on them to get the actual shape you are going for. The scoops you can model the portion of the fender leaving the section open where the scoop pieces go then model the scoops separately matching the topology of the fender section it will go, then either leave it a separate object or join the mesh. Snapping verts is handy when trying to match up with other parts of a mesh. Cars with lots of shape changes and part transitions can be a pain as I found out when I did my Lambo Huracan but vertex snapping made the job a lot easier as I could turn wireframe on the part and then model the additional pieces and know that the align correctly.
Headlights and tail lights really give me issues too