A lot of the time ive noticed, when people model things, they do it in parts.
Example, that sword would look pretty complex and frustrating all at once, so you could try and model the handle first, then model a moon-like shape thats near the blue sphere seperately, then duplicate those moons and slightly change the size & shape of them to suit/fit the image, if you know what I mean.
(or create the moons as drawn-on flat plane textures)
Im no pro, so I most certainly could be wrong; just thought I'd give a possible suggestion based on my observations.
Hope I helped 1 way or another!
Hope for the best!!