8pawns gambit
Creating my own opening?

If he capures we can do the fraid liver Italian Game: Duble Horse, Temproal Evan's Gambit, Horse Attack, fried liver attack, MG alb Attack

I call this "King's Pawn Opening: King's Spearhead Gambit"
also "Queen's Pawn Opening: Queen's Spearhead Gambit"
One is obviously better than the other
To "invent" an opening, as in an actually practical opening, (as opposed to the hot garbage shown here) you will need to study several lines. Check for a refutation of literally every move. If there's even one point where the opponent has potential to get an advantage beyond, say, 0.9 pawns as a result of a move, discard it automatically.
For example:
The Bishop's Opening as Scholar's Mate is extremely easy to defend against before the queen is even out (2...Nf6). Since one who has learned Scholar's Mate likely has not learned the actual ideas of the Bishop's Opening (let alone if White is at low enough an Elo to have considered SM in the first place), White has put a Bishop in the middle of the board to no particular purpose. However, if White had seen 2...Nf6, he may have chosen to play something else, perhaps 2.Nf3 (Ruy Lopez, anyone?).
ware opening, 8 pawns gambit