1. Create an account and upload your.zip to a filehoster. (I use MediaFire).
2. Open your download page, the one with adverts and a green button.
3. Right click green button and select "Copy link"
4. Make account on TechnicPack.net.
5. Click "Create a Modpack"
6. Enter info and paste link into URL box.
You should now be provided with a link for you Launcher. Enter it and enjoy your modpack.