This is an ideal time of year to do your planning!
Important things you will need to decide are :-
* Crop rotation?
* Beds or traditional?
* Things you enjoy eating?
* Siting of sheds,greenhouses and cold frames if appropriate?
* Time available?
* Paths?
* Ordering seeds?
* Plan of plot?
* Soft fruit?
* Watering, ie butts or hose etc?
* ordering manure or compost?
* Growing cut flowers?
* Sitting out area?
Just a few things to take into consideration but most of all enjoy your plot and the produce you get from it!