As someone who's never heard of you before now, if I may offer some suggestions that may help you to expose your content to newcomers like me. Of course, take this with a grain of salt, I'm a random internet user but I felt I needed to take the time and write something nice and (hopefully) encouraging to brighten a stranger's day in this coronavirus pandemic. :)
- The name of your video could be improved to help searchability. You use "Tile Map Editor - Part 4 (designing a tile map)" and I see why you might choose that, it's a Tile Map Editor for 2D games. However, when I am on Youtube, I'm more inclined to search for "How to create 2D game tile map" or "Create a custom 2d game tile map".
- I happened to watch a few of your videos and noticed that you are working on this in your free time after your full-time job. Totally get that, I'm writing budgeting software in my free time, it's hard to find time. In my experience, when I find a video that's more tutorial-esque, I find it helpful for voiceovers and shorter segments that I can digest. When I don't feel I can pause the video without missing something, it's hard for me to keep my attention on the whole video.
- Do you have a landing page or website? I was hoping to find a link to that in your description on Youtube where we could read a little bit more if we didn't want to watch videos, or if you were using any software/tools you wanted to share on Github with others. I know quite a good portion of the HN audience enjoys seeing new code projects and I think yours is worth sharing with the community too! Likewise, sharing a github link in Youtube or vice-versa is good cross pollination.
- You seem to be moving your mouse a lot for the brush feature :), have you thought of click-dragging over a set of squares to create a brush that way? (They all seem to be contiguous anyway in the sprite map, right?). All of the squares you click-drag over would be in the brush. Otherwise, maybe you could hold ctrl + click on all contiguous squares (and a separate button to save those squares as a brush preset).
- Are you designing these sprites yourself? You do a good job, much better than I could ever do - I wish I could draw that good.
(I guess I _did_ have more to say, aha)