For this project it may be helpful to use 3D figure models for pose, anatomy and lighting reference. There are a couple of great resources for this listed below.
If you were previously using Fuse, it has been discontinued and Miximo has been updated to include some of those features.
Daz Studio is a free program you can use to manually pose, adjust camera angles and light your 3D models. You can download Daz Studio for free at the following link: https://www.daz3d.com/get_studio
It comes with a few free figure models, but most models are available for purchase on their website at: https://www.daz3d.com/shop/
Daz Studio is great for creature, animal and fantasy-type 3D reference as they have a ton of models available for purchase.
Magic Poser is available for free as a mobile app for your phone or tablet. There is also a lite version available in your browser, but it will only work in Chrome or Firefox.
https://magicposer.com
Gather images to help you design your character. Using Pinterest is a good way to collect these. Share your link on the slideshow.
Costume Selection: Civil War Set
Prop Selection: Skylanders set
Textures of surfaces: leather, stone, metal, etc.
Use textures.com to gather the textures.
Start a pinterest collection :