From the Texas Real Estate License Act..
(vii) would seem to indicate that you'd be acting as an unlicensed broker.
(1) "Broker":
(A) means a person who, in exchange for a commission or other valuable consideration or with the expectation of receiving a commission or other valuable consideration, performs for another person one of the following acts:
(i) sells, exchanges, purchases, or leases real estate;
(ii) offers to sell, exchange, purchase, or lease real estate;
(iii) negotiates or attempts to negotiate the listing, sale, exchange, purchase, or lease of real estate;
(iv) lists or offers, attempts, or agrees to list real estate for sale, lease, or exchange;
(v) auctions or offers, attempts, or agrees to auction real estate;
(vi) deals in options on real estate, including a lease to purchase or buying, selling, or offering to buy or sell options on real estate;
(vii) aids or offers or attempts to aid in locating or obtaining real estate for purchase or lease;
(viii) procures or assists in procuring a prospect to effect the sale, exchange, or lease of real estate;
(ix) procures or assists in procuring property to effect the sale, exchange, or lease of real estate;
(x) controls the acceptance or deposit of rent from a resident of a single-family residential real property unit;
(xi) provides a written analysis, opinion, or conclusion relating to the estimated price of real property if the analysis, opinion, or conclusion:
(a) is not referred to as an appraisal;
(b) is provided in the ordinary course of the person's business; and
(c) is related to the actual or potential management, acquisition, disposition, or encumbrance of an interest in real property; or
(xii) advises or offers advice to an owner of real estate concerning the negotiation or completion of a short sale; and