Tech Star products.

I recently bought some Tech Star products from my on line hobby shop[:)] But,
I was surprised to find that they were PE parts[%-)] I was wondering if any of you have used this product and could give me some advice on how to best use it[8] The two items I have are the leafy shrubs and the tall grass[X-)] Any help will be greatly appreciated[bow][bow][bow]

Thanks[:D]
Richard