I want to clean up the image by removing some of the black specks and heavy lines. In the Layers panel, I will select the layer that holds the object, then choose View > Zoom in. In the Tools panel, I'll choose the Clone Stamp tool, then click on the Preset picker in the Options bar. I'll change the Size to 9 and the Hardness to 25%.
While working, I may occasionally find it necessary to change the size of the tool. I can either return to the Preset picker for this, or press the right or left brackets.