Draw Texture is working fine here. From your screenshot, you havent defined TextureUWidth or TextureVHeight, which should be between 0…1 depending on how much of the image you want to show, since its set to 0 its probably using the first pixel only.
You’ll want to understand UV coordinates better if you’re using the non-simple draw method. They’re just as important as your screen X/Y/W/H.
If you were using an atlas (which you should for the final version), the UV X/Y/W/H would definitely not just be 0/0/1/1 but something more like 0.1/0.2/0.4/0.25