It was a long shot...

Now that I'm rereading it, I am starting to lay connections here.

It almost sounds like you or someone else is going to basejump which goes wrong.

This could be a predictive dream that is ment to be a warning for someone to not basejump or parachute jump or whatever.

Let me explain. (taking you as if you'd go)

You first see the plane that will take you off.

You see a date, which could be today's date as if you'd fly on that day...

The stone with a 1 could be a plane number or just a reference to you being the next jumper.

90 degrees turn towards the opening of the plane how a normal jumper does that.

Then you jump out of the plane.

This is where you fall.

The sign of the cross could mean that its a fatal jump because something goes wrong.

nice theory, but I don't do anything like that, nor do I know anyone who has anything to do with planes, unless it means an emergency evacuation of a damaged plane i'm on... but I dont want to be pessimistic.

I think I will never draw something conclusive...

Sometimes a vision doesn't make sense at all, and is only an imagination of your thoughts.