N.H.
I've done the 'I'llmakeitbecauseit'scheaperthatway" route with a tutu. I've sewn for 38 years so I know what I'm doing. Not hard if you really want to make it. BUT, My neice turned me onto www.haloheaven.com and was stunned to find out how inexpensively I could buy one (CUTE colors!) They were about the same price as the 'raw' fabric... without my sewing time. And they have baby/toddler sizes! I just opened my first box from them yesterday and I'm pleasantly surprised at the quality!
BTW, she and many other crafters buy their items (really inexpensive), put them together, and sell them on eBay and etsy!
Other sites I use are www.allfreesewing.com and www.lovetosew.com. Both sites have free sewing patterns many through blog links, the latter has a 'mission statement' of sorts that wants to encourage sewing by youth and 'newbies'.
Also, www.familyfun.com has some great party ideas. I just checked and I think you'll be pleased. I searched 'lady bug party'. The cutest snack popped up. Lady bugs on a stick!
Happy (future) 1st Birthday to your little one!