Features › Headline text
Most thumbnails are judged at the size of a postage stamp, on a phone, in a feed. Three or four words is usually the limit. Tell the builder exactly what the words should be and it sets them into the image rather than pasting them on afterwards.
Say the headline exactly. The model treats it as text to render, not as a description.
Heavy and blunt, handwritten, stencilled, outlined so it survives a busy background.
Shrink the result on your screen until it is the size of a phone thumbnail. If you cannot read it there, cut a word and run it again.
Three or four. Every extra word costs you legibility at the size it is actually seen.
Yes. Ask for a clear area in the composition and add your own type afterwards.