Am i big enought to "satisfy" her?

ok well this girl i wanna fu*k really bad wants me to f*ck her to. she is hel*a y and i want to but im afraid she wont have alot of pleasure. were both virgins and my is 5 1/2 inches long. were both 14. also i dont wanna just "get the job done" i want her to LOVE it. is there anything i could to to make her enjoy it more?