I have not grasped UV editing yet, but I just want to put a photo in a frame and size it to fit.
I built the frame based on the "Interiors" tutorial, selected the face, gave it a texture, mapped an image into the color channel of the texture, and this is what I get (see image). The image doesn't fit.
I tried adjusting basic UV options in the attribute editor. I don't recall how to use the UV Texture Editor well, but I don't think that this should be complicated. I must be doing something wrong.
Select the object (ie the picture)
Windows> UV Texture Editor
Under Image make sure that Display Image is checked on.
Right Click and hold button with your mouse in the texture editor
-Options come up on what to select.... mouse to the right for UV Selection
-Marquee over the image in the UV texture editor making sure you select the 4 corners
(You'll know your selecting the UV's if the points selected are green)
-Move, Scale, or Rotate the UV points to fit your picture.
UVs can be pretty tricky to get the hang of at first, but the more you practice the easier they get. Here’s a quick video on how you can do that. I didn’t happen to have a picture frame model handy, but the same technique can be used on your picture frame as the computer monitor in the video. Hope it helps!