You don't need help - the GTALOGO site has a crap load of pre-made ones others have contributed w/ instructions on how to use one of the ones on-site as a GTA Online Crew Logo. On the site, also, there is instructions on how to create your own, so you could take almost any image or create a composite of images and with a little work with Photoshop or some other editor that will output to SVG - then follow the instructions on GTALOGO on how to add your SVG emblem code to the emblem/logo page on your Social Club account.
There's some info also on site, see this post by Jimmy ->
You must login or register to view this content. and undoubtably videos on Youtube etc on the basics of it.
You don't need help, just some inner motivation and a bit of effort - and to be blunt about it, if you are that sick of the one you already have, then that's all the motivation you need.