Not bad
If I may, it would have been a little funnier if he (or she.... whatever the blob thing is) slowly picked the flower then quickly inhaled (ate) it, but whatever, for a first animation that was good.
What type of computer are you using? I don't know much about animation (never tried it, plan to soon) but could you save the flash, and import it to something like Windows Movie Maker and just add your music there? Again, I've never made a flash, but I used that for mashing clips and adding music to them, I would think that'd work.