Update uso docs (#404)

Author: comfyui-wiki

images/tutorial/flux/flux1_uso_reference_image_gen.jpg

@@ -85,11 +85,14 @@ Please download all models and place them in the following directories:
     - 1.2 Ensure the `LoraLoaderModelOnly` node has `dit_lora.safetensors` loaded
     - 1.3 Ensure the `ModelPatchLoader` node has `projector.safetensors` loaded
     - 1.4 Ensure the `Load CLIP Vision` node has `sigclip_vision_patch14_384.safetensors` loaded
-2. Click `Upload` to upload the input image we provided
+2. Content Reference:
+    - 2.1 Click `Upload` to upload the input image we provided
+    - 2.2 The `ImageScaleToMaxDimension` node will scale your input image for content reference, 512px will keep more character features, but if you only use the character's head as input, the final output image often has issues like the character taking up too much space. Setting it to 1024px gives much better results.  
 3. In the example, we only use the `content reference` image input. If you want to use the `style reference` image input, you can use `Ctrl-B` to bypass the marked node group.
 4. Write your prompt or keep default
-5. The EasyCache node is for inference acceleration, but it will also sacrifice some quality and details. You can bypass it (Ctrl+B) if you don't need to use it.
-6. Click the `Run` button, or use the shortcut `Ctrl(Cmd) + Enter` to run the workflow
+5. Set the image size if you need
+6. The EasyCache node is for inference acceleration, but it will also sacrifice some quality and details. You can bypass it (Ctrl+B) if you don't need to use it.
+7. Click the `Run` button, or use the shortcut `Ctrl(Cmd) + Enter` to run the workflow
 
 ### 4. Additional Notes
 

tutorials/flux/flux-1-uso.mdx

@@ -85,11 +85,14 @@ style={{ display: 'inline-block', backgroundColor: '#0078D6', color: '#ffffff',
     - 1.2 确保 `LoraLoaderModelOnly` 节点已加载 `dit_lora.safetensors`
     - 1.3 确保 `ModelPatchLoader` 节点已加载 `projector.safetensors`
     - 1.4 确保 `Load CLIP Vision` 节点已加载 `sigclip_vision_patch14_384.safetensors`
-2. 点击 `Upload` 上传我们提供的输入图像
+2. 
+ - 2.1 点击 `Upload` 上传我们提供的输入图像
+ - 2.2 `ImageScaleToMaxDimension` 节点将会缩放你的输入图像用于内容参考，512px 会保留更多的角色特征，但如果你仅使用角色头部作为输入，最终输出图像往往会有角色占据太多空间的问题(或者结果很糟)。设置为 1024px 会得到更好的结果。  
 3. 在示例中，我们只使用 `content reference` 图像输入。如果你想使用 `style reference` 图像输入，可以使用 `Ctrl+B` 绕过标记的节点组。
 4. 编写你的提示词或保持默认设置
-5. EasyCache 节点用于推理加速，但也会牺牲一些质量和细节。如果不需要使用，可以用 `Ctrl+B` 绕过它。
-6. 点击 `Run` 按钮，或使用快捷键 `Ctrl(Cmd) + Enter` 运行工作流
+5. 如果需要调整输出图像尺寸
+6. EasyCache 节点用于推理加速，但也会牺牲一些质量和细节。如果不需要使用，可以用 `Ctrl+B` 绕过它。
+7. 点击 `Run` 按钮，或使用快捷键 `Ctrl(Cmd) + Enter` 运行工作流
 
 ### 4. 补充说明