NJBob said:I would spend my time now shaping the garden and amending the soil.
All the suggestions are good ones.
I notice that you have an actual lawn so perhaps you might consider adding some kind of border to keep lawn treatment/chemicals away from the border plantings. That is a good project for this time of year.
A brick border looks good:
Scalloped concrete blocks are another choice:
Good luck with your new garden!