When your writing a story that has aliens making first contact, there are several things to keep in mind.
First you must remember that the aliens would be seen with plenty of warning. That is unless they were using an anti-gravity drive system or something equally beyond us that would have no visible exhaust.
Secondly, and I can’t stress this enough, the approach matters. If the aliens are peaceful they will probably enter high orbit and open up contact via radio, they may not even get that close and stay a few AU away.
This would be done first their safely, having better tech does not mean they are immune to nukes after all. It also would be done to show that they do come in peace. They would have no reasons to land on earth without an invitation.
Such a contact would be delicate to say the least, the last thing they would want is for one side or the other to feel threatened.
Even beyond the stake’s being so high the fact that we would have no background for them would make things hard. We would not know their history, the only information we could use to judge them would be how they approached us.
They would have our entire history, and would have everything they would want to know at their fingertips. In such situations it would be very easy to assume the worst, they should know that and be willing to wait as long as it takes.