Not a bad start, yes there is a little bit of divergence in the beginning of the longer lines and the also at the end. But still thats pretty normal I guess, just needs more practise.

Maybe I am wrong, but I feel like you should draw more with the whole arm, even for the smaller lines, that will help with the wobbliness. Also one thing thats helping me, and could help you too, is like prepare your pen at the start then aim your eyes on the final destination and let the arm to the rest.

Continue on the next excercise, everything will get better as you go on :D.