How to combine texture files of a Blender mesh

Hello!

I want to find out how to combine to combine two texture files into one png so that I can map them onto my mesh in Roblox. I am trying to make a baseball model and the seams and the base have different textures so they’re two different pngs but I can’t have that because if I have two different pngs and two different meshes in a tool in Roblox it doesn’t work. Here’s what it looks like. Thanks so much!


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