There are a number of things to consider when you begin exporting products and as you have found out from your earlier export to Australia that certain countries have strict quarantine regualtions for wooden items, however this shouldn't disuade you from expanding your business. I have listed below a few things that come to my mind straight away.
1) Your selling terms would need to be established with the purchaser as there are various inco terms used in exporting. ex Works, CPT, C and F, DDU, CIF to name but a few. The terms of sale would establilsh if you were to prepay the freight etc to arrival or to delivered customers door. You can google Incoterms for more detailed information. The terms of sale also establish who pays the import duties and taxes applicable at Country of destination, which 9 times out 10 is the importer.
2) Freight Costs - once you have established your terms of sale, you would need to decide the method of shipping adn the costs invloved. Aifreight, seafreight, or courier.
3) Cost for export packing. As you mention clocks, goods would need to be suitably packed for export to avoid damage in transit.
4) insurance - if you want to cover goods against damage.
The above would all add to the costs of your items and would need to be factored in to your costings and sale prices. Please feel free to contact me directly should you have any questions as I am sure we can be of benefit to you as a freight forwarder who can assist you with documentation requirements, Country requirements, quotes and export packing.
I hope the above is of some assistance