@PNWmom that made me feel sad to read, only a small percentage of the population is what most would consider beautiful but everyone is actually beautiful when you really get to know them. The biggest hurdle your going to have is relaxing and coming across confident as that's all that matters to keep people interested. Your focussing on crafting/parenting, that's a huge market and youtube is a perfect platform to demonstrate your skills, share your crafts and experience. People are watching your channel for what your teaching them. Spend some time reading through these forums as you will find tons of great information to help get your channel up and running... and to get found through the use of good tags, thumbnails, etc.
Give it time and it will grow! Please don't feel that your not good enough because you aren't happy with your appearance. Notice I say it's you that's not happy with it because that is what it is coming down to. You will attract a community of like minded people and probably most of them will not be young, slim blondes, that much I can guarantee as they are not usually into crafting!!!
Seriously, send me a message if you want to talk more but I strongly encourage you to overcome your fear and do it, my biggest piece of advise is for you to feel relaxed when the camera is rolling because people will see through the nerves and leave, not for any other reason. I'm no expert but I'm an ordinary middle aged woman who loves all sorts of crafting, I could easily find your channel if I was looking something up and trust me, I would not leave the channel because I thought you were overweight or not attractive in any way. I'm not saying you even are, that's your opinion but I would certainly be watching what you are making and feeling myself filled with inspiration and oooo's and aaaaaa's at the beautiful things your showing me.
If your concerned about what your friends/family think, don't tell them haha, I've only told 2 people that I trusted wouldn't judge me that I have a youtube channel. Don't put that kind of pressure on yourself when your first starting out.
I better finish here, I talk too much, especially when I get passionate about something.