You can make some improvements by using QuickTime as a video editor, so you can personalize your recordings by cutting, rotating, splitting or combing clips. You can also remove portions of a recording that you don't want.
Capto has a nice toolset full of text and editing choices. You have the option to put arrows or texts, so you can add some information on your images if you want to. You can also blur, highlight, and alter color and stroke properties.