These eggs can be printed in spiral vase mode or normal with 0 top layers, 4 bottom layers, 1 wall. In normal mode you can use infill and print the eggs solid if you want. I printed in vase mode. Each egg file is solid and approximately 55mm wide and 70mm tall.  The use of a brim or raft will be helpful to get the egg to stick to the bed.  I used a brim of 10mm.  The eggs have a horizontal like top and bottom to the print, print slowly.  

Print instructions

Nozzle size: 0.4 mm 
Layer height:  0.15mm recommended
Wall line width:  0.8mm  recommended
Print speed:  25mm/sec recommended
Vase Mode enabled (spiralize outer contours in Cura)