Subglandular or submuscular ? (photos)

Thanks for you inquiry.  The photos don't show your entire breasts but from what is visible, the breasts seem to be small with no sagging.  For patients with this chest type I usually recommend implants under the muscle, so there is a thicker layer of tissue covering the implants.  This should decrease the chance of seeing or feeling the edge of the implant, or rippling.  I find this works well in my practice.

Thank you for submit your pictures.  In your case specifically  having a size A doesn't  have the enough  cover for the implants.  my recommendation will be  in a dual plane  or sub muscular plane  to secure  a correct  coverage  of implant   and  a best  esthetic result.  

 Based on your photographs and the fact that it seems like you have very little amount of your native breast tissue