Complete M2e Template and create/integrate custom block from Magento

I have partially completed a template for ebay listing, hopefully responsive but haven't been able to test that functionality yet. Either way, it needs completing. The basic interface is partially complete. Needs css changes and additions to style the template. The design should be based on our existing template at [login to view URL] Optimisation for the page to load as quickly as possible. Add and test the image gallery (an integrated feature in m2e). Use the tag, check it's working properly and possibly add some css to improve its layout. Find a method of including icecat specifications : [login to view URL] to the specifications tab of the listing in HTML format. This should be possible using static boxes [login to view URL] and adding it to the description template : [login to view URL]:8090/display/eBayAmazonRakutenPlayMagentoV52/eBay+Description+Template#eBayDescriptionTemplate-AddingCustomStaticBlocks Where icecat specifications aren't available, I would like the standard specifications list displayed. The specifications need to look the same as shown in the existing template with the dropdown accordion function as displayed. Once complete, it will need testing in sandbox before completion