They're self-adhesive and you can cut them to length. You'll want to put four or five strips on the top of the frame to have enough light. You either need soldering skills to wire the strips together, or some of these: Connectors (These work, but sometimes you have to wiggle it all a bit in the holder to get it to contact)
These lights use the same kind of plug as CCTV cameras, and there's plenty of stuff that will fit. You also want to think about fill light - I recommend one or two strips placed just under camera position. This could be at the bottom of the picture frame if you're using one.
I just use 4 strips up top, and a single one at bottom, and that will give you a useful ratio.
These LEDs have a bit of a green spike to them. You can easily white balance that out in Photoshop or Lightroom. If you have to mix with ambient light (not shooting in a studio, for example) you'll want to gel the lights to get rid of this.
*****I admit I did NOT put this frame together, I had my Dad do it who has some knowledge of electrical type things, but he said it was Very Easy!****
I put together a 20x30 rectangle frame (You can buy one cheap at a yard sale or make one like I did with just thin boards) Attache the lights and connectors to the frame with enough slack to wiggle the connections if need be. I then hung the contraption from my backdrop holder with loose zip ties so I could move it around a bit.
Here is one of the shots I took this weekend, she had makeup on and her freckles were not very evident to the naked eye...I did process it a bit to bring them out, but the light found them for me
@hopess13