Boyfriend Birthday Cake

I'm going to be attempting this cake for my boyfriend's birthday. I've been baking things amateurly for about a year. I'll be making an almond and cherry cake with some type of buttercream.

I bought black and white premade fondant, a fondant smoother, the lightsabres, the Star Wars fondant cutter, 3 star cutters, and a steamer. I have cake pans, cake turn table, cake leveler, piping bags, piping tips, etc. at home already.

I make delicious bakes but I struggle with the decorating aspects as I have bad carpal tunnel syndrome and a tremor in my hands. I bought the cutters to try and help get some precison with the fondant.

Can anyone give any advice on how to make cakes look professional? Any little tips would help. Please feel free to post cakes you've made before too.

Here's some baby yoda cookies I made. They were cute and delicious.