This is lovely, I am in the process of making this cake as well, any tips would be appreciated.

I looked for all the pans that would work and chose the metal pan. It was bigger and I like the angles. I can’t remember if I had to tweak the slant off the top or not though.
Ice as usual. Pipe as usual. Just take your time and let the buttercream crisp up before piping on the details.
The baby is made using a mold that comes in pieces so you can pose him. I molded the pieces and glued them together with melted fondant and toothpicks. The dress is just a piece of fondant and the lace is made with a very tiny lace mold/cutter. I’m not sure what else I can tell you. Perhaps if you have a question, I could help.