u can make anything +3 first shot like this:
elixir+lucky powder=>fuse (as fast as u can) and it's +1
elixir+lucky powder=>fuse (as fast as u can) and it's +2
elixir+lucky powder=>count 3 seconds=>fuse and it's +3
works to +3 fine,but if u try to +7 do same thing,just:
count 5seconds--->+4
7seconds--->+5
10seconds--->+6
12seconds--->+7
this didn't work out xD
but the +3 thing works.Good luck