would you help me pls are this sentences correct ?

iam german and have to do a short presentation of new york.
my next topic is....
but first of all i give you a short introduction about new york...
my second topic is...
and at last i tell something about.....
on this picture you can see
my next point of my presentation is
moving on to the next part of my presentation where I will present
are theere any failue ? pls help me^^
No fails at all.