Step 1: Open GIMP

Download and install GIMP if you haven’t already. Launch the software and begin by opening the image or project you want to work with.

Step 2: Create a new layer

In the layers panel, click on the ‘+’ icon and create a new, transparent layer. Name it “Drop Shadow” to help you differentiate it from other layers.

Step 3: Set foreground color

Choose the color you want for your shadow. Select the appropriate color by clicking on the foreground color box and adjusting the color sliders until you find your desired shade.

Step 4: Choose the selection tool

From the toolbar, select one of GIMP’s selection tools such as rectangle select, ellipse select, or lasso tool based on your preference and the shape of your object.

Step 5: Select object

Using your chosen selection tool, draw a selection around the object in your image that you want to have a drop shadow.

Step 6: Configure the feathering option

In order to make a smoother transition between shadows and highlights, go to ‘Select’ in the top menu and click ‘Feather.’ Adjust feathering settings to create a more realistic shadow effect.

Step 7: Add drop shadow

While still having the object selected, navigate to ‘Filters’ in the top menu bar. Select ‘Light and Shadow,’ then choose ‘Drop Shadow.’

Step 8: Adjust offset values

The offset values determine where your shadow will be placed relative to your selected object. Adjust these values according to your desired shadow placement. Positive values move shadow towards right/bottom while negative values towards left/top.

Step 9: Set blur radius

Adjusting blur radius can help you create softer or harder shadows. A larger blur radius value will result in softer shadows, while a smaller value will yield harder ones.

Step 10: Modify opacity

Set the desired shadow opacity by adjusting drop shadow layer opacity. You can do this in the ‘Layers Panel’ or by tweaking the opacity slider in the drop shadow filter dialog.

Step 11: Click ‘OK’

Once you are satisfied with the settings, click ‘OK’ to apply the drop shadow to your image.

Step 12: Deselect

Make sure to deselect your chosen object to remove the selection lines. Go to ‘Select’ in the top menu and click ‘None.’

Step 13: Edit drop shadow layer (optional)

You may want to make further changes to your drop shadow after applying it. In this case, select the drop shadow layer and use other GIMP tools like ‘Smudge’ or ‘Brush’ to modify its appearance.

Step 14: Save your project

After finishing your project, save it as a GIMP XCF file by going to ‘File,’ then click on ‘Save As.’ This allows you to edit your image in the future without losing any of your progress.

Step 15: Export your final work

To share or upload your image, export it as a commonly used file format such as PNG or JPEG. Go to ‘File,’ click on ‘Export As’, choose your desired format, and press ‘Export.’

Now that you’ve mastered using drop shadows in GIMP, get creative with it! Enhance your designs with realistic shadows and make them stand out.