Webcomic on spacehey?

I've had some ideas for a webcomic that I'd like to make

I'd only really make a comic if people are interested (I have very bad issues with motivation)

Here's some ideas 

1. Depressed guy trying to live his life but having a hard time

2. Guy who has his brain swaped with a rat, so now he's trying to be a super hero 

3.two brothers who try to live average lives but they live in a webcomic so good fucking luck with that

4. A story that follows multiple people in a magical mystical land

5. Idk something with Mike 

I'm not the best at describing things so I'd like to make a sample of each so people could see which they'd like