my car it doesn't stop unless I press it all the way to the floor

i changed my brake pads by my self for the first time. and i followed every step there was to take 1. take of tire 2. take off the two skrew behind 3. take out old brake pads. 4. use c clamp to put pissions back in place. 5. put new pads on 6 . skrew back on 7. tire back on. 8 press brakes in car till get firm. 9. i did all of that but when i drive my car it doesnt stop unless i press it all the way to the floor and pump it again . then it contiue to do the same thing when i move forward again.. i have brake fluid in my car... whats wrong ?

ps/ i did accidently unskrew the place where the brake fluid comes from a lil did leak out but i skrewed it back in