Last summer I was at lake Garda in Italy. Of course I filmed there a lot. Now I want to show which routes the boats took crossing the la.

So I uses two maps of Lake Garda at he top of the scene. With a paint program I made a yellow line from Lake Garda to Limone on one of the two (identical maps). With a transition (top down) the second map with line line (and the route) appears. But he result is not as smooth as I like!

How can I 'composite' that better and more smooth?

Greetings,

Wiel