nice effect on the 2nd picture... if i am not wrong, my friend did mention to me about a shooting technique called "dragging" the shutter for long exposure which can achieve this effect. for your case, what settings on the 1000D did you use ?
#8 I'm no expert here but I feel that just a shot of the flowers doesn't say anything. Perhaps you should try to include the background. If you're using flash, try to make sure it lights up everything and not half-half like in the photo.
Comments for the above two photos in bold. I feel for 4 & 10, direct flash gives very harsh lighting. My guess is, you're using the pop-up flash. Maybe can try to use a diffuser? I've been using tissue paper as diffuser for the pop-up flash.
I kinda like this pic.. given now it's the festive season, i get the feeling of sadness/loneliness from this picture like as if the subject is looking enviously upon the family/friends bbq, wishing he too had something like that of his own..