One glass that got away. . .
Concerning people getting help:
This is all a learning process. My advice is to try your hand at the skin then show us what you have (take a screen shot or something on occasion.) Comments will come and then you can make adjustments and learn how to make better models and better skins.
For skins, use
The Gimp if you don't have one of those $1000 programs. Make use of layers for shading and breaking up the skin into its parts. I have some skins that are seriously 5~8 layers because there is so much going on in it and I want to keep it organized.
Good organization at the start makes it easier to "fix" something that is broken later. It also makes it easier for someone else to work with the skin if/when you send it to someone to help you with.
I started with the beer bottles and made rough skins that were touched up and improved. Start where you can and let others help you, but don't demand it.