Hi there mr5point7,
Before anyone can help you design your new bathroom you need to get together a few things like;
- a realistic budget
- style of bathroom i.e modern, contemporary, federation...
- what type of bath, shower, vanity, mirror, toilet, tapware tiles etc (low end or high end - refer to budget)
- layout of existing plumbing (are you going to move them - refer to budget)
then it will make it easier to help you.