i havent tested this yet, and i dont know if it will work, but its just an idea. if you became lucid, could you purposefully become non-lucid with the intention to become lucid again in a few minutes, to get used to the feeling of becoming lucid? if you could do it enough it might be able to become second nature to go from non-lucid to lucid making it easier to DILD. if this works it might be able to help out with dreamsigns you may be missing, you can find one in a lucid, and then become non-lucid, to regain it once you see your dreamsign. if you can get it to the point you are lucid the instant you see the dreamsign it might carry over into other dreams.