Problems with add to cart button

I want to add an “add to cart” button on a different page than my products page. i have been able to succesfully add a button to one product but i am having problems editing the size, type and how it looks. The size is the most important. it looks like this at the moment:

http://luxshisha.dk/shop/#

i would really like it to look like this with the + and – and blue button

http://luxshisha.dk/shop/aeble/#.U3ccxk2KCUk

i hope someone can help me. many thanks