Can anyone give me any tips with lightning? I feel like these are coming out really dark I'm using two spotlights, are there pre set lighting settings I can download or render settings I need to adjust?
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You don't need pre set lights and the render settings are too difficult for a beginer to mess with. You can eiter use the emmisive surfaces exter mentioned or you can use spotlights as well.. Go see tutorials. Thundorn (the one that exter mentioned) is very good at emmisive surfaces, and WP Guru is very good at spotlights and more.
The thing you must remember is that you have to have lighting all around your character most of the times (to create the 3D effect in the 2D image) and these lightings are not suppose to be of the same strength (e.g. stronger in the front and left, softer in front and right and somewhere in between on her back and right. This is just an example.. you have to experiment until you get what you need.
For now, keep your Dome light off in the render settings (scene only), because it will be hard for you to create the effect you want with the dome lights on.
Look at real photos to see the angles of the shadows and try to mimic those with spotlights or whatever.