Want to do some home Reno’s and decorating but don’t know where to start😅

I’ve been really wanting to change some things around the house and have no clue where to even start. I’ll start off by saying I live with my mom still. She’s always busy with work and things around the house, and I’m in college and I work(outside of this virus). I’ve mentioned wanting to change some stuff and do some renos and she’s totally okay with it as long as I run it by here since she absolutely hates doing all of those things. I’ve also agreed to pay for everything so there’s no issue there.

My problem is not knowing where to start. Our house has had the exact same design with pretty much all the same major appliances ( our fridge and oven part of the stove have stopped working so I’m working on replacing those) We moved in here almost 19 years ago so it’s pretty outdated in terms of decoration. For now I’m hoping to make minor changes that could really help make things look different. Anyone have any ideas or advice on where to start ? I’ve already changed my room by painting it and adding a floating shelf and a few paintings and pictures.