Wow, too messy!! You mixed some crazy stuff in there, man! :lol: But it's okay for now. Keep reading some tuts and you'll improve.
i think u ve distored the pic a lil, maybe hold down ctl when u change the size of it. in the 1st the render placement is not right.It dont look right maybe put it oint he midddle and work on ur backgorun coz it dont go with ur actual render. the bottom one is got wy to muchs tuff and the colours arent rite maybe use less colours and not to many different wants hve look at few tuts.
dont like the text on the first one nor that red line nor the yellow still cool though on the second one its interesting to say the least