Gently remove the seedlings from the tray by pushing them up from the base and gently handling them by the root-ball. Then lay your plants out into the pattern or design you have decided on, starting from the middle and working your way outwards.
Once you are happy with the layout, you can begin planting. It is a good idea to work from a timber board, to avoid compacting the soil. To plant, make a small hole, then place the root-ball just below the surface and firm-in afterwards. Finally, give your new bedding display a good watering, as this will ensure they are established well.