With a good 100k views under my belt, I may be able to contribute here: - Make sure you offer something new to watch every video. Progression is the key to lasting success. This is pretty difficult: I tend to repeat myself several times during a series with stuff I simply don't remember doing earlier. In my experience, the only way to make sure it stays 'fresh' is to set goals for each video, and scrap the goals you've achieved from your list of series goals. For KSP goals could perfectly coincide with the missions you are given, such as altitude records and achieving orbit for the first time. Later you can set yourself up to go somewhere, like Duna, and do something specific, like building a base there. Again, missions help to reinforce a plan. - Make sure your viewers see you fail from time to time, too: There is no shame in failure, it happens to everyone. KSP takes a lot of attention, and mistakes pile up in situations that you cannot reverse, unless you save/load constantly, which isn't fun to watch. Back out of a plan if it seems destined to fail over and over again and go smaller if you need to. E.G. Get to the Mun first before trying Eeloo, even if this is your end goal. Keep it realistic. - Figure out the basics of the game before starting. It's generally not fun watching three videos of you bumbling with the controls. I know because I've made that mistake. Make checklists if you have to. I used to mess up my staging CONSTANTLY untill I made a small list of what to check before a launch. It saved time and it really helped keeping the flow up. - Half an hour is what most people that enjoy KSP can stomach. Anything longer has to be very exciting to keep the average KSP fans attention. Short videos generally equals more views. 15 - 20 minutes will bag you a lot more new views as well, as it is easier for new people on your channel to assess what you are all about. And some general stuff, from experience: - Be well rested before a recording. - Have a drink (water) handy, as you will be talking a lot. - Get a good mike. Static is not nice to hear longer than a few minutes. - Viewers will notice when you are not enjoying yourself. Make a cut to continue another time if things get boring/annoying/repetitive. - The most important thing of all: HAVE FUN and express that if you feel like it.