If you continue on the forum, then somebody else might gain something from the thread in the future.
Now this is only my suggestion – there are dozens of possibilities with applying finishes – which I think will suit your abilities and provide good results.
Purchase some of our benefactor's
Sanding Sealer and apply it to the now absolutely spotless surface of the desk adhering to U-Beaut's instructions. You'll also want some of U-Beaut's
French Polish (following the instructions in steps 1 and 2 only) and some
Traditional Wax in either Cedar or Neutral and again, follow the directions.
Buy a litre of meths from Bunny's for cleaning the brush etc. and some 600 grit wet-or-dry paper and post some pictures when you're finished.