Art and Soul
Personal Elements and Monogram Assemblage workshop
The A above is from a rubber stamp I have. I trimmed it down to fit under an antique lens.
There are many ways to add 3 dimensional initials or monograms. Some of the samples above are scrapbooking letters of the alphabet. The triangle is a game piece turned upside down, the capital T is an old brass stencil with paper behind it. All are 3D and would require a good adhesive to stick on our crackle board background.
Most of these are left over die cut letters, positive and negative. They are not all 3D, but that's still an option.
I added my initial to a scrap of dyed muslin with some tiny buttons.