These are really cute :3
I think your strength in these are your hand-drawn designs like the stars and flowers. If you do not mind some constructive criticism, I do have a few comments!
Microsoft Paint is not, and was never intended to be, photo editing software. It actually seems like you have done a surprisingly good job cutting out those photos, but that is definitely not the strength of MS Paint. There are a ton of free, and quite good, programs out there for photo editing such as GIMP (hell, even Adobe Photoshop is free if you look in the right places).
You should avoid using cursive, handwriting-inspired or loopy script fonts as much as possible. Especially when small they can be hard to read and are usually just tiring on the eyes. Many of the people I know have a hard time reading cursive and some schools don't even teach it anymore. I would reserve those fonts for headers or special texts and use easier to read fonts for the body.