What program are you using? Somehow you thread has gotten posted in the Adobe Premiere Elements Forum (video editing). The nature of your question suggests to me that you have posted in the wrong forum.
If this is the case, please re-post your question in the Adobe Photoshop Elements Forum or wait for a moderator here to move your thread from here to there.
While you are deciding your next move....
Please give more details of what you are doing besides naming the program being used.
All the cloning that I have ever done in Photoshop Elements - as I hold down on the Alt key of the computer (Windows) main keyboard, I mouse clicked
(sampled) the area that I am going to clone in another area and the click on that other area and cloned the original image.