Looks like your server might not be set up to allow image files to be displayed by other websites. Is your server linux or windows?
If you're on Linux and using CPanel, then find the "Hotlink Protection" icon, and in there you can disable hotlink protection, which will allow images to be viewed on external domains.
You can also instead of disabling it, choose which domains are allowed to hotlink, and what file types you allow or block, etc.
[img]belidos3d.swgrp.co.uk/wp-content/uploads/2016/03/blogo.png[/img]
Primary Desktop:
i7 7700,k NV1070 8GB, 16GB 3200mhz memory, 1x 2TB Hybrid, Win10.
Secondary Desktop:
i5 4760k, NV960 2GB, 16GB 2333mhz memory, 1x 2TB Hybrid, Win10.
Laptop:
i3, Intel 4000 series graphics, 6GB memory, 1x 500gb HDD, Win8.1.