I have good experience with text prompts here. For example, with my heron: it was still not worth anything, but when I (in desperation, as a last attempt just before destroying my computer) wrote “bird heron with detailed feather and eye and bill”, it suddenly gave a pretty nice result (in relation to the miserable original, of course). But I don’t know how well it works in general.
I would also really like it if Gigapixel remembered the prompt. I always have to copy and save the text – sometimes it comes out to more words. If it could remember, say, the last 10 prompts when I experiment with them, that would be a joy…