Looks pretty good to me, the best thing with scrolling is that once that pattern is gone you cant tell where the lines were, so anyone else looking at it will just assume thats how its meant to look. Dont be hard on yourself, you have done well.
Just get some scrap ply and draw some wavy lines and some with different angles so you get used to turning the piece, this will make good practise for when you come to cutting a project. Learning how to turn to piece is one thing that can take a little work to do, best method is to place a finger near the blade (not too close) and turn the piece slowly as desired.