Welcome to this wonderful board. I have 5 grandchildren so I am usually making quilts for them as they grow and have different interests. I mainly make larger quilts and if I see a pattern I want to make then that quilt just goes in a pillow case and up on a shelf. As soon as my daughter and 3 granddaughters move out I have quilts for all of the beds in our house and I plan on layering them on the beds so they will get to lay flat. Yes, I change sizes of quilts to meet the need. Sometimes I had more blocks or do less blocks. It really depends on what I will make it for.
Just be careful---this hobby is very addictive but so enjoyable.