Just adding a little bit more on both replys above . After you identify what are your core game mecanics/aspects (the bones of your game) use only the minimun necessary to create a copy of the game, then ask someone to test it. Use the feedback to see if you are right about your assumptions, because sometimes what we think that are important don't actually deliver value to the player then focus on the feedback and build over it. This usually helps you to get back into rails.
What do you think is missing in the gif that i havent show yet???
Doing a prototype of the prototype it's really a good idea, but unfortunately i have trouble for finding people for playtesting my game, all my friends are distand and can't come on the fly!!! I alredy set a day with my friends (where I intended to give him the final prototype), but i don't know if i have the time to finish the game core mechanics if i do another prototype!!! Thanks for the support and your advice, tho!!!