First Day of Practising

Today is the first day I set my efforts on practising. I am shooting for the first 9 bars of the piece. I have been practising these bars over and over for about 15 minutes now and I am having a bit of trouble making sure the accents are noticible. Of course drumming on a table does not help. I started the bars fast but than realised that I must take it slow in order to incorporate all of the accents. The accents are generally in the same places but there are some exceptions that catch me off guard while I am playing. I am also having a bit of trouble with the crescendos. There is one crescendo where I go from Piano to Fortissimo and another that goes from Piano to Forte. To me when I play these I cannot tell the difference between my Fortissimo and my Forte and this is going to be something that I will have to work on.