Walter Hugh Leonard Jr

Hey guys, I've been playing Tekkit for a long time, and with the release of Tekkit lite, I have been making a few modifications to the pack to suit the play style of my friends and I. I don't mean this to be a low-effort post (as I have extensively read the rules, getting banned isn't fun!). I was just wondering if anyone could give me some advice on where to begin if I were to create my own mod pack? All I currently know is that I would need to ask all the developers of the mods for their permission to use their mods in my pack. Asides from that, will I need permission from the developers of forge? Is there some special licensing to go through to have a mod pack available to the public? Any insight or help is very much appreciated! I am new to the forum, but a long time player. I hope the community on the forums is just as good as the community of players!