You can do it! I’ve us completed my 12th cake and first stacked and handpainted for my baby girls 1st birthday! I was terrified lol
I agree with what has been posted above…..first draw it out to scale, big piece of paper and play around with sizes, then use cake dummies or anything you can mold to make a replica. Cut out your models from card and start placing them on to size them. You can start making your figurines in advance, just make sure you use good fondant or fgum paste, use a skewer in them so you can attach them later and store them in an airtight container away in a cool place. Airbrushing I have yet to try, but I use petal dusts to add depth and color. Melt a little cocoa butter so you can brush it on…you only need a touch, you can also use vegetable oils. Good brushes are a must both large and small. Take your time, plan well and you will do it😊
Vee Walker Caballero