used dog supplies

Can someone please help me write a letter to my mom to let me get another dog for Christmas?
At this moment I have no pets, I used have a golden retriever, was with me all my life and I loved her more than anyone on earth, but for 8 months was put down at the age of 14. I would get another dog but no dog on earth could replace Lucy (the dog who used to have) I'd really like to get another. I want to write a very nice, letter to convince my mom saying we could go to the shelter and then fixed and have all shots are. I would pay for itself, and we have tons of supplies for dogs, but I still pay for all the supplies you need, and I would care for him as well as I took care of Lucy. I also want to clarify that I do not need no gift to all of my mom, because she said yes to a dog would be a good gift. So could someone give my ideas on how to write a very nice letter, I am not so good at writing letters to convince … thanks!
Awe I'm sorry to hear about her dog Lucy, golden retrievers are amazing dogs, I have 2 right now and I love them both! Well I will try to help. Dear Mom, I love Lucy much as you know, and it meant a lot to me and I'm still very sad for her, but I think another dog would really help us. I promise to take good care of him / her and I pay for the dog and all the material that is me same. And I can take good care of it! And if he says yes, we do not have to do me any gifts for Christmas, and let me have another dog would be the best gift Christmas can always ask … If you could at least think about it, it would mean a lot to me .. Love (your name) Hope this helped!
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