FIrst off, great mini's! Especially since they are your first!
I sadly don't own or play PuppetWars, but can give a few painting tips: first try to clear the moldlines. On your Nurse you can see a moldline running over the syringe. Clearing a moldline is easy: before painting just scratch along the line with a Stanley knife, and it will scrape right off!
Paining it practice. When you paint more, you get better! To achieve better blends of colours try to water your paint. The more you water your paints down, the more layers you need to cover, and thus you smooth the transition from one colour to the next. I try to water down my paints at least 1:1 (water:paint), and when you want a really smooth blend, like on flesh, I water it down even further.
Before I started watering down my paints, I simply did this: paint the thing the basic colours you want. Give the paints a wash (usually brown wash, unless it was metals, black, grey or white, then a black wash). When that's dry, reapply the basic colour on the higher portions of the model. Tadaa, basic table-top quality.
Good luck with painting the set, and finding other players to enjoy the game with! Hope my advice makes sense. Otherwise I can try to explain further, or maybe someone else more experienced can chime in!