I will get up early tomorrow.
My dog will always be waiting for me outside the door.
After I wake up, I'll be brushing my teeth and washing my face. (The original sentence is impossible, unless you brush your teeth and wash your face while you are still asleep)
Before I leave for work, I will have been walking my dog in the park for 10 minutes. This is a tricky sentence. I think a better version would be: Before I leave for work, I will walk my dog in the park for 10 minutes. OR By the time I leave for work, I will have walked my dog in the park for 10 minutes. (because you will not still be walking your dog when you leave for work)
When I arrive at my company, I'll be working all afternoon.
I'll have been working on a project for three hours before my boss comes in.
At 6 p.m., I'll get home by car. Okay - GO home is more common.
When I arrive home, my dog will bark at me because she'll be welcoming me back happily. (Your dog cannot have been welcoming you before you were home)
After taking a shower, I'll be watching TV with my dog in the living room for an hour before going to bed.
And tomorrow will be a full day.