Rear Coil-over spring install question

So i am in the process of installing some coil-over springs in the rear. When i let the pressure off of the rear end i noticed a gap between the top of the coil-over spring and the floor of the car. Is this normal and will this not be an issue when the car is placed back on the ground? i don't have much experience with these type of springs so any help is appreciated. I can get pictures if needed.

i can get pics this evening, but there is a gap once you lower the rearend while the body is on jack stands. I've never installed coil-over springs in the stock location so i am curious if this is normal. Thanks

So i finished up the install and i have attached pics of before and after. I am confused because i used 12 in 150 lb coil-over springs. i thought it would sit higher in the rear end.

Yeah the one that sits between the body and the top of the spring?

So should i have went with the same pound spring in 14in?

i bought universal coil-over springs. Qa1 brand with 2 1/5 dia. I havent changed the shocks out yet i am still running some cheap Competition Engineering 3 way adjustables.