Just measure your plot,use a4 paper and draw to scale. My plot is 10mx15m so to scale i drew 100cm(plot)= 1cm(plan).
Work out how wide/long you want your beds (mine are 4.4m x 1.5m), how wide the paths (mine are 60cm between and 1m for the main) and draw to scale.
On paper mine looked a bit straight and boring so changed it, so i have a 60cm bed going around the front and sides(these have or will have the fruit bushes and trees), then a full size bed, a main path going through the middle, a diagonal path leading of the main and going one way to a shed and patio area, the other way goes to the compost area at the opposite end of the plot. The diagonal paths make a smaller rectangular bed and a triangular bed. The triangular beds might be planted with flowers.
just re-read that and it sound realy confusing ;D
On paper it makes the plot more interesting and at the moment i only have the right hand front and side and one full sized bed made and partialy planted( the rest is still overgrown with weeds).
I will copy the main drawing 3-4 times and work out/label the crop rotation for the next 3 years.
let us know how you got on with your plans.
Neil