The room you want to use as a craft room has many windows or do you want to put many windows in a existing room?
slender book shelves and cabinets or if you don't need a couple windows, put boards with pictures on them so its attractive from the outside.
If you want to build a whole new entire craft room, as in addition, you need to get a design professional to help you, on a local basis that requires building permits.
In many jurisdictions, putting in new windows also requires building permits, that’s because of the framing requirements.
Building permits are for your safety and to protect you from liability and protect you from Sharky contractors.
Hi Tari, here is a video to add a window into an existing wall
If you cannot do this, there are a ton of LED lighting options that can provide a natural light in your room.