Opacus is right on the money. Make round things perfectly round where needed, think about the weight of elements, the weight of the lines, the flow. Things like how it's different if the text touches the edge or if it doesn't. Currently Andre touches the edge, PIX doesn't. It can be used as a stylistic effect, but here it's not. Would you like the text to be more visible? The eye completely overshadows it. Leave the pixel-detail for later.
For practice you could try making a few simple weighed lines and try a very minimal AA on them.