i just checked out your blog. i like the tidy look and arrangement; it is very easy to navigate :) so Kudos over that. your photography is great too :)since you are looking for posts to make for your blog, why not start with your photography itself. you can make posts with 4-5 pictures and a short description about them- in that way you can interest your reader with information and treat them with good captures too.
if you want you can take up the lyrics iof a song or a poem and associate it with your photographs- you know, relate each line or phrase with some good shot you have taken or stumbled on from any other website.
and ofcourse you have so many trending topics and competitions on Indi- that would be a good food for thought :)
and a tiny suggestion- while going through your blog, i jumped at the label 'poetry' and the first impression i had was that YOU had written it :P so the label was a bit disconcerting :P you could have detailed that post with how that poem had inspired you and what you learnt or something like that.
i see you have already started on book reviews, movie reviews, cricket, Pooja's 10-day challenge etc so i am not suggesting them again :P
if you have a good eyes for nature and photography, browse the photography websites on the internet. i am sure you wont fall short of inspiration. there would always be something that would draw you to write :)
the best things to get inspired from are your day-to-day happenings. i mean, it all about what you observe and what you feel. age is NOT a matter for blogging; i am 16 too :P if you dont get inspired to write anything creative, just rant. rant about some guy who doomed you or some girl who broke your heart and Bingo! you have a post. In my intial blogging days, ranting was all i used to do :P still do sometimes :P believe me-its fun :P and most stories spring out from such stuff too. just let your imagination go wild, you find HUNDREDS of stuff to write on :)
and then, as Deepak said, the best way to learn is by reading other's blogs. and there are so MANY wonderful writers in this forum, it would inspire you to no limits :)
if you are into poetry, then there are many blogs and forums that give you muse to write on like Jingle, Promising Poets parking lot and then Leo's Haiku heights. you can learn new forms of poetry, try your hand at it, read other's interpretation of the same muse and have fun!
phew, that was too long!! good luck with blogging :)