I'm not sure what you mean by that. A process in what sense? If you're using the term in a very broad sense meaning any kind of activity then sure, but that doesn't say very much if anything at all.
What you seem to have said is that aesthetics is a merely a personal process on the way to creating an end result - a work of art/photograph/whatever. That's what I took issue with. Don't get me wrong, I'm not saying that aesthetical considerations aren't part of the process of creating art but I object to the word "merely" in your sentence. Aesthetics as a branch of philosophy is not at all a means to an end (creating art), it's an academic field of study. And as such the concepts and theories one employs and comes up with are open to critical discussion with others. If I as a philosopher put forth a theory on a subject then I'm also willing to defend my arguments in discussions with others and modify them when they're proven wrong.
Well, you'd have to apply 'merely' to arithmetic and thence to the whole of mathematics in that case, because that's the parallel I'm drawing. Both philosophy and its subset aesthetics are questions of using mental tools, and if that isn't a process, what is?
After all, what is the aim or end of philosophy? Surely, to discover something, be it Truth, Beauty, Morality or a convenient rule of thumb. Philosophy is in its very nature thinking about things, so it is meaningless to pretend that it is an end in itself, i.e. that there is no 'thing' to think about.
Of course, the thing you think about may be philosophy itself: about whether there is a
ding an sich, whether existence precedes essence, and so forth. To do this, however, you are still using philosophical tools to analyze a concept, and besides, it is a fairly small part of philosophy (though of course its more enthusiastic advocates would argue that it is all of philosophy).
Quite apart from that, there are Marxist philosophers, feminist philosophers, moral philosophers, you name it: the word 'philosophy' is so flexible as to be a great deal less meaningful than my use of the word 'process'. Shakespeare got it right when he said that there are more things in heaven and earth than are dreamed of in philosophy: I omit the 'your' because I take the reading that 'your' in 'your philosophy' is like the 'your' in 'your average photographer', i.e. it does not imply that this is Horatio's own specific philosophy.
Finally, unless aesthetics
is a means to an end, the end in question being the understanding of beauty, and unless that end can be replicated and applied (not necessarily by the philosopher, but by an artist), I find hard to imagine an emptier subject.
Cheers,
R.