So I have never really gotten into messing with interchanges, I generally just say "eh good enough" and make everything else pretty lol. But I don't want to do that anymore, I want to make them pretty too and I want to do them myself!

How do I even start with this? Would I be able to keep it like it is and just add to it??? I don't want to change its look, I just want to add a branch to the side without one. Please tell me what you'd do and some tips would be great!

My city is quite young still, I have not beautified it at all. That comes after I place things where I want them.

The last picture with the added 6 lane is representing the general direction and angle I would like the interchange to go into.

I need to have an interchange going to that part of the area for my city to look how I want it.

Also I am using the move-it! Mod for the first time and it seems to cause some roads to sink occasionally, am I doing something wrong?

((((The map is called Oceania, I have visual mods I've set up for it to look this way, it will not look the same if you install it, but everything will be placed the same))))

Please and thank you for advice!