Congrats on your new toy!!! BTW, which lens were you using? Good attempts for a first timer to DSLR there. 1st and especially the 3rd pic are pretty sharp, and well exposed too, especially the whites on the flower in the 1st pic. 2nd pic suffers a bit from blur probably due to motion shake/slow shutter.

Do keep shooting, I'm sure u'll get the hang of ur new toy in no time. One tip: Practice lots!