Inferior and Inadequate Raw Materials:

Another complaint that we have received from people who have tried to assemble products at home is that they have received substandard raw materials in their starter kit.  Most of the product assemble companies allow you to include a finished Sample of the craft that you will be assembling in order to give you an idea of what you're finished craft is supposed to look like. It is also the way of telling you what your craft once it has been assembled should look like and that if it suffers from any discrepancy from the samples supplied, your craft will probably be rejected.
The complaint received by a certain home assemblers is that the raw materials used to make this sample craft and the ones supplied to them to make their batch of crafts differed in quality.  So much so that these home assemblers claim that it was impossible to assemble the product with the same finish using the material is sent by the company.  Since these same companies also prohibit the home assemble from buying raw materials on their own, home assembly of such a craft becomes futile in nature. 
It is unlikely that you will be successful in assembling the given craft at home using inferior quality of materials because this is a crucial point that determines the final finish and a look of the craft.  Inferior quality of raw material means that it tears, breaks, stains and just does not hold up to the rigours of this craft assembling process.

The products that are a part of the basic assemble category where what you mostly need to do this cut and paste the products also suffers from provision of inadequate tools.  For example in a majority of the starter kits you are provided with a knife to cut paper or cloth or wood, whichever of being the building material for your craft. In most cases this knife is flimsy and completely unsuited for cutting raw material.  It is commonly and usefully advised to purchase an Exacto knife for this purpose which may be commonly available at your nearest Wal-Mart store. There is often a bottle of Elmer's glue included with the starter kit if it is required.  This is insufficient in most of the crafting projects. You will be unable to achieve the neatness and the accuracy in your work using this regular glue.  You are also better advised to have a low-temperature glue gun for more accurate pasting and assembling of the craft. This works out in the long run as well as any crafting guide would suggest that you use a low-temperature glue gun for making crafts that require fine and careful handling.
If indeed you intend to work with home based assembling jobs and projects these tools will come in handy and serve you for your future work as well.  Consider it an investment well made.

The summary of this post is that providing in adequate tools not only increases the expenditure of the home assemble in buying the extra tools such as a good cutting knife and a low-temperature glue gun, but the bad quality of raw materials makes it impossible to be able to finish the craft with neatness and the same exactness of design and quality as is required by the assemble at home company in order to get approved and paid by them.