In this tutorial we will use a Decal to add a painting to our game.
Start by making a frame for your painting.
Next, Publish your game to ROBLOX. It is much easier to add an image to a published game than to an unpublished one.
Now we will add a Decal to hold an image of our painting. Right click on the back panel of our frame, hover over Insert Object, and click on Decal.
Open the Explorer and Properties window. Find the Decal that was just inserted and make sure it is selected.
In the Properties window, click to the right of the Texture property and then click on Add Image... from the menu that opens.
This will open a window to select the image from a local file on your computer. Click on Choose File and find the image you want on your hard drive.
When you have selected the file you want, click the Create button. In a few seconds your image will appear in the decal.
And now we have a beautiful painting in our game! Keep in mind you can use decals to insert all kinds of images, they don't just have to be paintings!